I would say Porifera
Biogeographic isolation separates of a species through geographical and biological forces.
Biogeographic isolation refers to the separation of the members of the similar species, or a group of organisms, which breed and generate offspring that can further give rise to young ones.
The separation can be achieved by the geographical forces like oceans, rivers, and mountains, and by the biological forces, like hunting times, and spring or fall mating.
populations is the answer
Velocity is the speed and direction of an object.
True
False
This is true. To find what does velocity equal is, you must do v= the square root of 2(Kinetic Energy)/mass. The mass should be in kilograms by the way.
Is this true or false mutations always negatively impact a population?
Final answer:
The statement that mutations always negatively impact a population is false. Mutations can be beneficial, harmful, or neutral, affecting an organism's fitness in different ways. Neutral mutations sometimes play a role in the long-term evolutionary changes of a population.
Explanation:
The statement that mutations always negatively impact a population is false. While it is true that many mutations are harmful, changing a functional allele to a less or nonfunctional one, some mutations have beneficial effects, such as increasing an organism's fitness. Moreover, many neutral mutations have no immediate effect on an organism's fitness but may still play a role in the long-term evolutionary process.
Advantageous mutations can lead to improved survival and chances of reproduction, as seen with the mutation that conferred insecticide resistance in mosquitos or the black coloration in peppered moths during the Industrial Revolution. Harmful mutations, on the other hand, can decrease an organism's fitness by reducing its likelihood of survival or the number of offspring it can produce. However, the evolutionary impact of mutations cannot be oversimplified; neutral mutations and those with only a slight effect can, over time, contribute to significant genetic diversity within a population.
define organic as used in the phrase organic waste only on the compost bin
Final answer:
In the phrase 'organic waste only on the compost bin,' the word 'organic' refers to biodegradable materials that come from living organisms, suitable for composting to create humus, a soil improver.
Explanation:
Definition of Organic Waste:
The term organic in relation to waste refers to materials that are derived from living organisms. In the context of a compost bin, organic waste would include things like food and kitchen waste, green waste like leaves and grass clippings, as well as other biodegradable materials derived from plants and animals. These organic wastes are typically broken down by microorganisms in the composting process to form humus, a nutrient-rich material that can improve soil quality and provide essential nutrients to plants.
It's important to distinguish organic waste from inorganic or non-biodegradable waste, which includes items like plastics, metals, and glass. Only biodegradable waste should be placed in a compost bin since these materials can naturally decompose and reintegrate with the earth, providing environmental benefits such as soil enhancement and reduction of methane emissions from landfills.
Organic fertilizers, like those made from composted organic waste, offer a host of benefits to the ecosystem and agriculture. They deliver nutrients more slowly than synthetic fertilizers, improve soil structure, and promote biodiversity in the soil. This makes them appealing for those seeking to farm or garden in a way that is more aligned with natural ecosystem processes.
These are organisms that are brought into a new environment, sometimes accidentally, sometimes on purpose; and have no natural enemies or controls.
The correct answer is - invasive species/organisms.
The invasive species, very often are very damaging to the new environment. The process of their introduction in a new environment can be:
- Natural, like with the Smilodon getting to South America once a land bridge opened between North and South America.
- On purpose (by humans), like the introduction of the coffee plant in South America.
- By accident (by humans), like with the introduction of the rats all around the world, that were dwelling on the ships of the explorers and migrants and managed to get to new territories.
All three examples have been damaging to the native species, in one way or another, with the Smilodon managing to destroy the Thylacosmilus, the biggest marsupial carnivore of South America, because of the coffee plant people have been destroying other plants to make space for it, and the rats have been out-competing lots of species around the world for food and also transmitted diseases to them which resulted in their demise.
Answer:
invasive species
Explanation:
usa test prep
What are natural causes of earthquakes that is what are the tectonic features and actions that result in seismic waves?
I know that if there was an earthquake (oceanic plates moving) in the sea there would be a force outward from the centrepoint and the ripples out would get bigger and bigger the smaller waves behind the first is like fuel and cause a tsunami. I hope this helps you or at less gives you a better Idea as to what the answer is.
Most multicellular organisms are composed of cells with different shapes and sizes, and those cells perform different functions. What is the best explanation for this? A. Mutations accumulate in an organism's cells, causing them to become different from the other cells. B. The structure and function of an organism's cells is determined by the genetic material it receives during fertilization. C. As cells divide, they only pass on the genetic material that will be used in the daughter cells. D. Environmental conditions influence gene expression, which determines how a cell develops.
The answer is D.) Environmental conditions influence gene expression, which determines how a cell develops.
The variety of cell shapes, sizes, and functions within a multicellular organism is primarily due to the genetic material it inherits during fertilization. This genetic material guides cell development and specialization, with different genes being expressed in each cell, allowing cells to perform various roles. This specialization facilitates the organization and coordination necessary for complex, multicellular life to thrive.
Explanation:The best explanation for the existence of different cell types, shapes, and functions within multicellular organisms is primarily driven by the genetic material received during fertilization, which then influences how a cell develops and specializes (option B). This differentiation process enables cells to assume varying roles within an organism, such as muscle cells for movement, skin cells for protection, and liver cells for detoxification. The instructions for these specialized cell types are coded within an organism's genome.
These differences in structure and function are the result of the selective expression of genes in each cell - essentially, certain genes are 'turned on' while others remain 'turned off', which tailor the cell for its specific role. Moreover, cells can express different genes at different times in response to various environmental stimuli.
Thus, an organism's genetic material doesn't only influence an organism's traits, but also the specializations of its cells, enabling complex, multicellular life to exist, grow, and adapt. The diversified features allow multicellular organisms to respond adequately to a variety of environmental conditions, enhancing their survival and ability to reproduce.
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If the results of an experiment disprove the hypothesis, the test was poorly designed and is invalid.
True
False
it would be false cause of his test designed
The statement that an experiment is poorly designed or invalid if it disproves a hypothesis is false. Disproving a hypothesis through experiment is a fundamental part of the scientific process, helping to refine or develop new hypotheses and enhance scientific understanding.
The statement "If the results of an experiment disprove the hypothesis, the test was poorly designed and is invalid" is false. The scientific method is a critical process in which hypotheses are tested against observations or experiments. Disproving a hypothesis is an integral part of scientific inquiry, helping to refine or develop new hypotheses.
A hypothesis is an educated guess based on existing knowledge. Scientists design experiments specifically to test these hypotheses. When an experiment disproves a hypothesis, it does not indicate poor design or invalidity; rather, it provides valuable data. This outcome can lead scientists to revise their hypotheses or to develop new ones that better explain the observed phenomena.
Furthermore, disproving a hypothesis does not weaken the practice of science but strengthens it by eliminating less accurate explanations, thereby narrowing the search for truth. This process is fundamental to scientific progress, contributing to our understanding of the natural world. It is important to remember that a single experiment's results can neither prove nor disprove a hypothesis definitively
Do the dolphin and dog fish appear to be closely related?
Dolphins and dog fish have a similar body shape due to analogous traits from adapting to similar aquatic environments, not because they are closely related on an evolutionary level. They do share a more remote evolutionary history as both are vertebrates. The Phylogenetic tree helps illustrate this separate evolutionary background.
Explanation:Despite the similarity in body shape between a dolphin and a dogfish, they are not closely related from an evolutionary point of view. Dolphins are mammals while dogfish, or as commonly known, a type of shark, are fish. This implies different evolutionary paths. The dolphin is a mammal that has re-adapted to marine life
and this has led to a similar body plan due to environmental factors, a concept referred to as analogous traits.
Both dolphins and fish are, however, vertebrates, indicating a more remote shared evolutionary history. This, in part, contributes to their similar body shape. But the likeness in terms of body shape does not envision a recent common ancestor but instead is a display of similar adaptations in response to comparable aquatic environments. The morphological similarity is more as a result of convergent evolution.
This is further corroborated by the Phylogenetic tree, an evolutionary tree that shows the order of evolutionary events and the order in which certain characteristics evolved. It clarifies that dolphins and dogfish have separate evolutionary backgrounds, meaning that they are not as closely related as one might initially assume based on external appearance.
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Which region would likely have the greatest amount of biodiversity
Most of the terrestrial diversity is found in tropical forests and in general, land has more species than the ocean; some 8.7 million species may exists on Earth, of which some 2.1 million live in the ocean.
Tropical rain forests on land and coral reefs in marine systems are among the most biologically diverse ecosystems on Earth and have become the focus of popular attention.
Amazon represents the quintessence of biodiversity, the richest ecosystem on earth.
The right answer is The Amazon region (due to its forest)
The Amazon rainforest is an equatorial forest located in the Amazon basin in South America. The Amazon basin covers 7.3 million km² and the forest itself covers about 6 million km², located in nine countries.
The Amazon rainforest is a tropical rainforest with the world's largest biodiversity (it has more species than the rainforests of Africa or Asia).
Which strategy best describes a way to address polluted air? Check all that apply.
1 replace the type of chemicals used in industrial processes
2 minimize the burning of fossil fuels used at industrial plants
3 study the effects of mold exposure on people who suffer from asthma
4 encourage people to continue burning fossil fuels as they drive vehicles
5 build industrial plants and facilities that release chemicals during processing
Answer:
a. replace the type of chemicals used in industrial processes
b. minimize the burning of fossil fuels used at industrial plants
c. study the effects of mold exposure on people who suffer from asthma
Explanation:
It's right on edge.
Answer:
The Correct Answer is A, B, and C.
Explanation:
Air Pollutants can be Reduced by following various methods:
Using low sulphur coal in Industries.Removing of NOx during the combustion process.Using a mass transport system like bicycles and Eco vehicles.Shifting towards those fuels which are less polluting.Using of Non-Conventional source of energy.By using biological filters and bio- scrubbers.By planting more trees.
the processes that change the boulder and cobbles to soil are weathering and
(A) metamorphism
(B) biological activity
(C) cementation of sediments
(D) melting of rock material
Answer:
(B) biological activity
Explanation:
The processes that change the boulder and cobbles to soil are weathering and biological activity. Weathering is the process in which the weather breaks down rocks into smaller pieces and particles, whether if it is from water, air or living organisms. Various biological processes help facilitate rock fragmentation. Between them we may find the roots of the trees that eventually pull rocks apart, we find how animals walk through the rocks making them disintegrate, and finally, we find some organisms that release chemicals that help break rocks.
The correct answer is (B). The processes that change the boulder and cobbles to soil are weathering and biological activity.
Weathering is the process by which rocks are broken down into smaller pieces and eventually into soil. This can occur through physical means, such as the freeze-thaw cycle, or through chemical means, such as the reaction of rocks with acidic rainwater. However, biological activity also plays a significant role in the weathering process. Organisms such as plants, lichens, and burrowing animals can break down rock through physical disturbance and chemical secretions.
Let's consider the other options:
(A) Metamorphism - This is a process that changes the mineralogy and texture of rocks through heat and pressure, typically deep within the Earth's crust. It does not produce soil but rather transforms one type of rock into another.
(C) Cementation of sediments - This is a process that occurs after sediments have been deposited. It involves the precipitation of minerals in the spaces between sediment grains, which can cement them together to form sedimentary rock. This process does not break down rocks into soil.
(D) Melting of rock material - This process, known as igneous processes, involves the melting of rock to form magma or lava, which can then cool and solidify to form igneous rocks. Melting and solidification do not contribute to the formation of soil.
Therefore, biological activity is the process among the options that directly contributes to the breakdown of boulders and cobbles into soil through weathering.
what are roles of the female reproduction system? check all that apply.
What are the basic building blocks of DNA and RNA? A. nucleotides B. phosphorous C. proteins D. sugar
Answer is option A. nucleotides
Answer:
(A). Nucleotides
Explanation:
The nucleotides are the basic unit in formation of DNA and RNA. The both nucleic acids contain nucleotides with different nitrogenous bases. The nucleotide consist of ribose sugar, phosphate and a nitrogenous base.
The ribose sugar is present in the RNA and deoxyribose in the DNA. In the absence of phosphate group, the ribose sugar and nitrogenous base forms a nucleoside.
The ______ proton is found in the nucleus and represents the element's ____________. A) positive; symbol B) positive; atomic number C) negative; atomic number D) neutral; atomic mass number
Answer:
B, proton is positive and it does not represent the symbol
Explanation:
did the thing and got it correct
pls i need ambitious
Breathing rate also influences venous return of blood and lymph. The contraction and relaxation of the skeletal muscles of breathing cause rhythmic ____________ while breathing, and this cycle is referred to as the ____________ . This action ____________ during hyperventilation, ____________ venous return of blood and lymph. The action of this mechanism ____________ during hypoventilation, ____________ venous return of blood and lymph.
Answer:
1) Respiratory rate and pattern
2) Respiratory cycle
3) Lymph flow occurs
4) Venous pooling
Explanation:
This question centers on the topic: Respiratory rate and pattern. When respiration is mentioned, the activities mostly acknowledged to it are breathing in and out which are made possible by the contraction and relaxation of the skeletal muscles and the lungs. Ventilation can be said to be normal when the inspiratory expansion and expiratory contraction of the muscles of the chest, occur without efforts and is mostly automatic.
The Respiratory rate and pattern can be observed when the frequency of the inspiratory phase is noted because this phase is active and very easy to count. Also, taking into account the number of breaths taken per minute, is referred to as the Respiratory rate. Observation of the respiratory rate and taking into consideration the inspiratory expansion of the chest cage is done during the respiratory cycle. Two groups of muscles known for the activities of inspiration and expiration while contracting and relaxing, produce a rhythmic respiratory rate and pattern. Lymph flow which occurs during hyperventilation has stopped. A venule is a small blood vessel which is in the microcirculation that accepts deoxygenated blood to return from capillary beds to veins. Venous pooling which is the Venous return of blood and lymph.
Final answer:
The respiratory pump, driven by the rhythmic changes in thoracic pressure during breathing, enhances venous return during hyperventilation and diminishes it during hypoventilation.
Explanation:
The student's question pertains to the influence of breathing rate on the venous return of blood and lymph. The contraction and relaxation of the skeletal muscles of breathing cause rhythmic changes in thoracic pressure while breathing, and this cycle is referred to as the respiratory pump. This action increases during hyperventilation, enhancing venous return of blood and lymph. The action of this mechanism decreases during hypoventilation, diminishing venous return of blood and lymph.
Kate gathered three boxes of the same size made of different materials: glass, clear plastic, and aluminum painted black. She placed them on a window sill in the sun for an hour and then measured the warmth of the air in each box. in this experiment the warmth of the air is an?
Answer:
The answer is Free factor / Independent variable.
Explanation:
A free factor is a variable that is controlled to decide the estimation of a needy variable s. The reliant variable is what is being estimated in a trial or assessed in a scientific condition and the autonomous factors are the contributions to that estimation. An autonomous variable in a test setup is the controlled variable. As it were, the free factor is the variable that is being tried or modified by the experimenter.
8th question science question. Need an answer ASAP.
it stands for Systeme International, unit of force. It is used throughout the world to express measurements in metric units. It is important because it is used to report results and perform calculations. SI units are important because it is a universal means of communicating different types of measurements.
where is carbon stored within the biosphere?
Carbon is stored on our planet in the following major sinks (Figure 9r-1 and Table 9r-1): (1) as organic molecules in living and dead organisms found in the biosphere; (2) as the gas carbon dioxide in the atmosphere; (3) as organic matter in soils; (4) in the lithosphere as fossil fuels and sedimentary rock deposits ...
Carbon is stored in the biosphere in the atmosphere, oceans, ocean sediments, soil, land sediments including fossil fuels, and the Earth's interior.
Explanation:In the biosphere, carbon is stored in various carbon reservoirs, which are critical components of the biogeochemical carbon cycle. Earth's atmosphere serves as a significant repository, with carbon dioxide being a major form of carbon here. The oceans are the largest carbon store, with vast amounts of carbon present in both the water and the ocean sediments.
Additionally, carbon is found in soil, where it is a part of organic matter and is processed by a multitude of soil organisms. Land sediments contain carbon in the form of fossil fuels, and Earth's interior also stores carbon, which can be released via volcanic activity. These reservoirs help regulate the global climate by acting as sources and sinks for carbon, which has implications for climate change and the greenhouse effect.
Which is not a source of meteoroids?
material from the asteroid belt
leftover interplanetary debris
the solid remains of comets
rocky chunks from neighboring solar systems
It's obviously D. There's no way that anything from another solar system would hit our planet because it wouldn't leave its' galexy's orbit.
Rocky chunks from neighboring solar systems is not a source of meteoroids.
Meteoroids are relatively small (sand to boulder-sized) fragments of rock orbiting the Sun inside the solar system. Meteoroids are usually formed from three main sources which are; (i) the collision of asteroids which produces crumbly debris (meteroids) in the asteroid belt, (ii) the solid remains of comets which occurs due to huge meteor showers and (iii) leftover from the debris that formed the solar system. Rocky chunks from neighboring solar systems is not a source of meteoroids.
Biological evolution is the process by which populations of organisms change over time. How could natural selection lead to the evolution of a species?
Biological evolution is the process by which populations of organisms change over time. How could natural selection lead to the evolution of a species?
what conclusion can you draw about this cell pictured
where is the picture?
What element is always present in an organic compound
A) carbon
B)oxygen
C)glucose
D)hydrogen
Some elements mentioned above, such as oxygen are present in organic compunds in many occasions, but from all of the options, the one that is always present is:
A. Carbon
Carbon is found in all organic compunds because of the bonds it can form, being able to form up to 4 covalent bonds.
Hope it helped,
BioTeacher101
Largest to smallest: cell, organism, tissue, chromosomes, organ system, gene, nucleus
organism, organ system, tissue, cell, nucleus, chromosomes, gene
which of the following is a major contributor of empty calories in american diets
I believe the answer is Sugar-sweetened beverages
Empty calorie is term used for food with high amount of calorie but have little to none nutrient. This food will give energy but not giving the nutrient that the body need to be healthy. Typical food would be the one with high sugar or fat content. Consumption of empty calorie food will provide more calorie, make the person easier to gain weight.
Overprocessing food is the biggest cause of empty calories in American diets. The various steps in the process of industrializing food add a number of artificial preservatives and other chemical stabilizers that are unhealthy if consumed in excess, plus added sugar, salt and fat to help remove most. of the nutrients that a food would have if consumed fresh.
After researching the rock they found, Mary and Jim believe it contains large pieces of the mineral limonite. They observed that their rock was yellow in color. And, according to the data they gathered, limonite is also yellow. They plan to conduct an investigation using the scientific method.
Part A
What is Mary and Jim’s hypothesis?
The hypothesis can be defined as an educated guess, which is made by the scientists doing a scientific research.
In this case, the scientist want to test the presence of the limonite in the yellow rocks, So, proposed hypothesis should include the color of rock they want to observe and the posssible outcome, which need to be tested.
So, a proposed hypothesis can be:
The rocks, which have yellow color are made up of mineral limonite.Answer:
They hypothesized that the rock includes large pieces of the mineral limonite.
Explanation:
Decide if each statement is a fact or a misconception about the theory of evolution by natural selection. The theory proposes that while natural selection acts on individuals, only populations evolve. The theory suggests that the organisms in a population that are the most well adapted are those that are the largest. According to the theory, individual organisms can evolve during their lifespan. The theory says that organisms that are better adapted to their environments will have higher survival and reproduction rates. The theory explains the origin of life. The theory says that natural selection gives organisms everything they need to live.
Natural selection is the process by which organisms are able to survive and produce offspring who use their environment successfully as compare to those which are less adapted to their environment.
The theory proposes that while natural selection acts on individuals, only populations evolve. Fact The theory suggests that the organisms in a population that are the most well adapted are those that are the largest. FactAccording to the theory, individual organisms can evolve during their lifespan. Misconception The theory says that organisms that are better adapted to their environments will have higher survival and reproduction rates. Fact The theory explains the origin of life. Misconception The theory says that natural selection gives organisms everything they need to live. Misconception
The theory of evolution by natural selection is a factual framework that describes how populations, not individuals, evolve over time. While it states that well-adapted organisms have higher survival rates, it does not suggest that being larger is necessarily better, nor does it explain the origin of life or imply that organisms evolve during their lifetime.
Explanation:Understanding the Theory of Evolution by Natural Selection
Deciding if each statement is a fact or a misconception about the theory of evolution by natural selection:
The theory proposes that while natural selection acts on individuals, only populations evolve. This is a fact. Natural selection acts on individuals, but evolutionary change occurs in the genetic makeup of populations over time.The theory suggests that the organisms in a population that are the most well adapted are those that are the largest. This is a misconception. Being the largest is not synonymous with being well-adapted; adaptations depend on the specific environment and survival needs.According to the theory, individual organisms can evolve during their lifespan. This is a misconception. Individuals cannot evolve; evolution is a process that occurs across generations within a population.The theory says that organisms that are better adapted to their environments will have higher survival and reproduction rates. This is a fact. Organisms with traits that confer a survival advantage are more likely to reproduce and pass on those traits to their offspring.The theory explains the origin of life. This is a misconception. Evolution explains the diversity of life and how species change over time, not how life began.The theory says that natural selection gives organisms everything they need to live. This is a misconception. Natural selection acts on existing traits but does not "give" traits; it favors traits that enhance survival and reproduction in a given environment.Natural selection and evolution are crucial concepts in biology that explain how populations change over time due to environmental pressures and genetic variation, leading to the current diversity of life forms on Earth.
which is a measure of the force of gravity on an object ?
This is called weight and is measured in pounds.
what travels through a food chain or web ?
The arrows in a food chain show the flow of energy, from the sun or hydrothermal vent to a top predator. As the energy flows from organism to organism, energy is lost at each step. A network of many food chains is called a food web. ... The trophic level of an organism is the position it holds in a food chain
In a food chain or food web, energy and nutrients move from one organism (producer) to those that consume them (consumers and decomposers), forming a cycle.
Explanation:In a food chain or web, energy and nutrients move from one organism to another. It starts with the producers (such as plants) that get their energy from sunlight through photosynthesis. Then, the primary consumers or herbivores (creatures that eat plants like rabbits, deer etc.) consume the plants and obtain their energy. Following this, the secondary consumers or carnivores (animals that eat primary consumers like foxes, eagles etc.) get their energy. Finally, decomposers (organisms that consume dead plants and animals, like fungi and bacteria) break down the dead organisms and return the nutrients back to the soil, completing the cycle.
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How are eras and periods of the geologic time scale named?
They are named for the places where geologists first described rocks or fossils from that time.
Answer:
a
Explanation: