Fossils are the dead remains of the organisms, which get imprinted on the land's surface.
What is the sea lily?Crinoids are fossils, which are nicknamed sea lilies. Crinoid survived 500 million years of the Earth's history. Crinoid's skeletal fragments are used to study Iowa's limestone deposits. The limestones are used in building stones and components in concrete. Crinoids are related to the Echinodermata, which are the starfishes, sea cucumbers, and sea urchins.Thus, the crinoids resemble the Echinodermata, which are the present-day classification of animals.
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Crinoids are related to present-day echinoderms such as starfish, sea urchins, and sea cucumbers. They are known for their flower-like appearance but are actually ancient sea animals with features like many arms and tube feet, similar to their echinoderm relatives.
Crinoids, nicknamed 'sea lilies', are actually ancient sea animals, and Missouri has made the crinoid its official state fossil. Present-day animals related to crinoids are other members of the Echinodermata phylum. This includes starfish (or sea stars), sea urchins, and sea cucumbers, which all share a common ancestor with crinoids. These animals are characterized by their fivefold symmetry, although crinoids can have many more than five arms. Additionally, like their echinoderm relatives, crinoids use a water vascular system for feeding and movement. Crinoids have a complex structure that includes a flower-like crown and a stem with ring-like elements; despite their plant-like appearance, they are suspension feeders with tube feet used to move captured food towards the mouth.
The correct term for a male fox is?
A female fox is called a “vixen”, a male fox is called a “dog fox” or a “tod” and baby foxes are called “pups”, “kits” or “cubs”. A group of foxes is called a “skulk” or a “leash”.
dogs ,tods, or reynards
Identify which statement represents a scientific law.
A) All matter is comprised of atoms.
B) The Earth is older than 100,000 years.
C) Force equals mass times acceleration.
D) The universe was created at the Big Bang.
C!! a law cannot be changed!
Answer:
The correct answer will be option-C.
Explanation:
A scientific law is a statement which provides a description of the natural phenomenon. A law can be quantified as it provides the data and holds true everywhere.
In the given question, an option which represents a force in terms of mass and acceleration represents a description of how a force can be related to these other units. Also, it holds true everywhere as it cannot change.
Thus, Option-C is the correct answer.
Cyanobacteria contain chlorophyll, blue pigment, and _____. chloroplasts membrane bound organelles mitochondria carotenoid pigments
Answer:
carotenoid pigments is the correct answer.
Explanation:
Cyanobacteria contain chlorophyll, blue pigment, and carotenoid pigments.
Cyanobacteria are prokaryotic and autotrophic bacteria, they prepare their food by a process called photosynthesis.They do not have nucleus and organelles.In cyanobacteria has various types of pigment are present such as carotenoids, chlorophyll pigment, and phycobilin pigment.Cyanobacteria also called blue green algae.examples of cyanobacteria are Chroococcales,Oscillatoriales and Prochlorophyta, etc.Thus, the correct answer carotenoid pigments.
Which contributions did Galileo make to the model of the solar system?
Galileo Galilei was the first astronomer to use a telescope to study the heavens. Galileo made a number of observations that finally helped convince people that the Sun-centered solar system model (the heliocentric model), as proposed by Copernicus, was correct.
Answer:
Data that showed that planets reflected sunlight similar to Earth's moon
Observations of the moons of Jupiter rotating around the gas giant
Explanation:
These answers are right because edge. said they were
explain the concentration of molecules when a cell reaches dynamic equilibrium
Dynamic equilibrium is a condition where constantly moving particles are balanced. It is different than static equilibrium, in which the parts do not move once they’ve reached equilibrium. An example of dynamic equilibrium is movement of water across the membrane. Water moves in both directions (into and out of cells) in order to balance concentration of molecules on both sides of membrane.
The atoms or molecules move from higher concentration to lower concentration gradient, such movement of particles is known as a passive movement. It does not require any energy. It continues by own itself until dynamic equilibrium is reached.
Dynamic equilibrium reaches when concentrations become equal and the rate of forwarding reaction is equal to the rate of the reverse reaction.
What are some basic steps to saving tropical rainforests?
You can tell and teach people about the unique animals that live there. You can also encourage others to help. Lastly as a basic step, you could make a support group. Ex; a walking group for rain forests.
Saving the tropical rainforest involves taking steps toward forest, wildlife and environmental conservation. Basic steos to be taken include :
Encourage tree planting to replace cut down trees. Enhancement of forest reserves in other to protect wildlife. Keeping to environmental conservation ethics.Trees are a major part of the tropical rain forest as they serve various purposes including being a niche which supports animals and birds.
Wild life conservation can be upheld by taking steps which prevents wildlife extinction, these include forest reserve optimization.
Therefore, all these steps are more are key to saving the tropical rainforest.
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Length=10cm, width=5cm, height=1cm, mass=300g. What is volume and density!
The volume of the object is calculated as 50 cm³ by multiplying its dimensions. The density is found by dividing the mass (300 g) by the volume, resulting in a density of 6 g/cm³. Volume and density are fundamental concepts in Physics that explain physical properties of matter.
Explanation:The volume of an object is calculated by multiplying the object's length, width, and height. In this case, the volume (V) can be found by the formula: V = length × width × height. Therefore, the volume of the object is 10 cm × 5 cm × 1 cm, which equals 50 cm³.
The density (D) of an object is determined by dividing the mass of the object by its volume. This can be represented by the formula: D = mass / volume. Given the mass is 300 g, and we've calculated the volume to be 50 cm³, the density is 300 g / 50 cm³, equating to 6 g/cm³.
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What are the factors that influence the ocean’s chemistry?
influenced by turbidity currents, sediments, pH levels, atmospheric constituents, metamorphic activity, and ecology.
Bacteria with the ability to break down certain types of plastic are places with a colony of E.coli bacteria that lack this ability.plasmid transfer occurs between the two colonies of bacteria and some of the E.coli gain the ability to break down plastic as well. What does this information demonstrate
YES B is correct Plasmids are nucleic acids which can pass on traits.
The phenomena described in the question can be termed as horizontal gene transfer, where E. coli bacteria receive the new trait (plastic degradation) from another bacteria via a plasmid.
Explanation:This information demonstrates a process known as horizontal gene transfer, or lateral gene transfer. Horizontal gene transfer is the movement of genetic material between unlinked species, rather than the transfer from parent to offspring that is the basis of vertical genetic transfer, or traditional inheritance. In this case, the E. coli bacteria have gained new traits (the ability to break down plastic) after receiving the plastic-degrading genes from other bacteria through a plasmid.
Plasmids are small, circular, self-replicating DNA molecules that are separate from the bacterial chromosome. They can carry genes for a variety of functions, including in this case, plastic degradation. Not all bacteria can take up plasmids, but those that can are said to be competent.
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Which species is most vulnerable to extinction the mountain gorilla or raccoons? Give at least 3 reasons why.
Mountain Gorilla because they are worth more than raccoons since you see raccoons almost everyday. They hunt animals for fur to sell, so the gorilla would be more costly since it's harder to find and kill.
Yes i agree Mountain gorlla are rare species that you dont hear everyday. its pretty normal to hear ahh a racoon. This is why mountain gorillas is the most vulnerable species to go extinct!
Which is NOT a characteristic of a gymnosperm? A. seeds not enclosed in fruit B. seeds enclosed in fruit C. cones D. needle-like leaves
The characteristic of a gymnosperm that is NOT present is seeds enclosed in fruit.
Explanation:The characteristic of a gymnosperm that is NOT present is B. seeds enclosed in fruit. Gymnosperms have seeds that are not enclosed in an ovary or fruit. Instead, they are partially sheltered by modified leaves called sporophylls. Cones and needle-like leaves are characteristic features of gymnosperms.
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Whats the tone for uncle toms cabin
According to _____ theory, workers are solely motivated by money
A. human relations
B. two-factor
C. classical
D. expetcancy
it's c. Classical theory
Microorganisms that contaminate food are collectively referred to as
1) biological agents
2) physical objects
3) chemical contaminants
4) viruses
Biological agents is the correct answer - gradpoint
The right answer is 1) biological agents .
All biological, chemical and physical hazards must be considered in the food chain.
Examples of biological agents: Hepatitis A and E viruses, Rotaviruses, Clostridium, Bacillus cereus, as well as parasites (Cryptosporidium, Entamoeba hystolytica, Giardia, Ascaris, Tenia ....).
Wegener used the fossil deposits of coal in Antarctica as a line of evidence for:
Scientists are studying compounds and a newly discovered rain forest plant. The plant produces in unusual substance that local people from the area say acts as an anesthetic.
One scientist tested the substance with the chemical indicator Soudan 3. If the test is negative, Which type of macro molecule is not present in the substance
A.) Protein
B.) Lipid
C.) Nucleic Acid
D.) Carbohydrate
Scientists are studying compounds and a newly discovered rain forest plant. The plant produces in unusual substance that local people from the area say acts as an anesthetic.
If another scientists test the substance using iodine, Which Macro molecule Is the scientists testing for?
( Same answer choices As before)
Please Help.
Answer: NOT B) LIPID ❌ ITS A) PROTEIN
Explanation: hope this helps :)
1) The substances that the scientist would see is Lipid
2) The scientist will see Carbohydrate
What will the scientist see?
A negative Sudan 3 test indicates that there are no lipids present. Chemical indicator Sudan 3 binds to lipids and changes their color. If there is no color shift, it means that the sample under examination does not include lipids, such as fats or oils.
Scientists look for the presence of carbohydrates when utilizing iodine as a chemical indicator. Starch is a form of carbohydrate that reacts with iodine to change color from brownish-yellow to blue-black. This test aids in determining whether a substance contains complex carbohydrates.
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Which graph is a quadratic graph?
Answer:
A.
Explanation:
We are given graph in the figure.
We have to find a quadratic graph
Quadratic function: It is that function in which degree of polynomial is 2.
Quadratic function is given by
[tex]ax^2+bx+c[/tex]
Quadratic graph: it is defined as that graph which is like as parabola along y- axis , along x- axis, along negative x- axis and along negative y- axis.
In option A: The given graph is parabola along y- axis.Therefore, it is quadratic graph.
Hence, option A is true.
In option B: the graph is not the graph of parabola.So,given graph is not quadratic graph.
Hence, option B is true.
In option C:It is graph of line .The equation of line [tex]y=mx+c[/tex]
It is not a quadratic equation .Hence, the graph is not quadratic graph.
Therefore, option C is false.
In option D: The given graph is not like as parabola along any axis.
Therefore, it is not a quadratic graph.
Hence, option D is true.
What is molecule x
If I'm not mistaken, that would be what is known as a peripheral protein. Peripheral proteins are proteins which are either inside or outside the cell membrane, but don't cross it.
If a protein crosses the cell membrane, it'll be called an integral protein.
Hope it helped,
BioTeacher101
A 'molecule x' could refer to an unspecified molecule in chemistry or, depending on context, the momentum of a molecule in physics or its mole fraction in a solution. A molecule is the smallest unit of a substance retaining its chemical properties, made up of atoms.
Explanation:The term 'molecule x' would typically refer to an unknown or unspecified molecule in a chemistry context. A molecule is the smallest particle into which any matter can be divided while still retaining its chemical properties. Such a molecule is composed of atoms. Examples of molecules are water (H2O), consisting of two hydrogen atoms and one oxygen atom, and hydrogen peroxide (H2O2).
In relation to other topics like physics, 'molecule x' may refer to the varying momentum of an individual molecule, in this case in the x-direction, to explain phenomena such as changes in velocity. The force exerted on the molecule can be determined from its change in momentum.
Also in a given solution, the term 'molecule x' can be used when discussing the mole fraction, represented as X; it is the ratio of the molar amount of a particular component (in this case 'molecule x') to the total number of moles of all solution components.
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Example of mutualisms in finding nemo
Cigarette smoking is a factor in causing all of the following conditions except
Chronic stress.
Hope this helps!
Chronic Stress
Is your answer :D
silver copper carbon and hydrogen are examples of different kinds of
They are all examples of elements.
Silver, copper, carbon, and hydrogen are examples of different kinds of elements, pure substances composed of single types of atoms. Metals like silver and copper, contribute to alloys such as brass, while nonmetals like carbon and hydrogen form organic compounds and other molecules.
Silver, copper, carbon, and hydrogen are examples of different kinds of elements. Elements are pure chemical substances that consist of a single type of atom and cannot be broken down into simpler substances by chemical means.
There are almost 120 known elements, and the majority of these are metals, such as silver (Ag) and copper (Cu), which are characterized by their shiny appearance and good conductivity of heat and electricity. Hydrogen (H), however, is a nonmetal and has different properties, such as being a gas at room temperature and not conducting electricity. Carbon (C) is another nonmetal and is unique due to its ability to form a vast range of organic compounds, which include substances essential for life like DNA and proteins.
Metals are typically mixed to form alloys for various applications; brass, an alloy of copper and zinc, and dental amalgam, a mixture of mercury, silver, and tin, are examples of such uses. Nonmetals, on the other hand, are often found as components of compounds, such as carbon dioxide in water or hydrogen stored in palladium.
The properties of elements, whether they are metals or nonmetals, define their vast array of uses in fields from manufacturing to medicine.
How is Earth's surface likely to change along the edges of a bend in a river channel?
Erosion takes place along the inner edge as water flows relatively slowly.
Erosion takes place along the outer edge as water flows relatively fast.
Deposition takes place along the inner edge as water flows relatively fast.
Deposition takes place along the outer edge as water flows relatively slowly.
i think that the answer is Deposition takes place along the inner edge as water flows relatively fast. hope this helps
A river flowing down a straight path will be moving the fastest in the middle of the river, just below the surface. But if that river approaches a bend, the speed changes.
SINCE FAST MOVING WATER DOES MORE EROSION, THE FAST OUTSIDE BEND IS WHERE EROSION OCCURS ON A RIVER
THE SLOWER INSIDE PART OF THE BEND IS WHERE DEPOSITION OCCURS ON A RIVER.
OUTSIDE BEND = FAST = EROSION
INSIDE BEND = SLOW = DEPOSITION
how could a change to an ecosystem increase the caring capacity for one species and decrease it for another? Include an example in your answer.
DISASTERS . Can change a group of animals envireonment and can make a new environmetn for a new community
Answer:
could increase the carrying capacity for one species because they would be consuming the other species a lot and growing larger in population, while the other species would decrease dramatically because they are being hunted. An example of this would be the introduction of the invasive species lionfish that began growing a lot because they were eating a lot of the other species, and the other species began dying out and decreasing in population.
Which particles move around the nucleus in an atom?
neutrons
electrons
protons
positrons
Electrons move around the outside of a nucleus of an atom
Hope this helps
electrons! hope it helps
When are Jaguars most active?
They are active when its time to hunt for food.
A particular single-celled organism uses radiant energy to fix carbon as sugars. This organism generates ATP by breaking down sugars through a process that uses oxygen. Based on this information, how should this organism be classified?
A.
anaerobic autotroph
B.
aerobic autotroph
C.
anaerobic heterotroph
D.
aerobic heterotroph
Option B is correct.
B. aerobic autotroph
Explanation:Autotrophs are organisms that can produce their own food from the substances available in their surroundings using light (photosynthesis) or chemical energy (chemosynthesis).
So, if a particular single-celled organism uses radiant energy to fix carbon as sugars and generates ATP by breaking down sugars through a process that uses oxygen, then it will be an aerobic autotroph.
Answer:
Option D aerobic autotroph
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In 2002, Colorado was hit with one of the worst droughts in US history. What steps could Colorado take to reduce the effects of future droughts?
build storm cellars
buy more rain gauges
build dams
install hurricane ties
use water conservation devices
The correct answer is option (C, D). The correct steps that Colorado could take to reduce the effects of future droughts are to build dams and use water conservation devices.
To understand why these steps are beneficial, let's consider the purpose of each option:
1. Build storm cellars: Storm cellars are underground shelters designed to protect people from tornadoes and other severe weather events. While they provide safety during storms, they do not contribute to drought mitigation or water management.
2. Buy more rain gauges: Rain gauges are instruments used to measure the amount of precipitation over a set period of time. While increased monitoring of rainfall can help in understanding the severity of a drought, it does not actively reduce the effects of drought.
3. Build dams: Dams serve multiple purposes, including water supply storage, flood control, and hydroelectric power generation. In the context of drought, dams can store water during periods of high rainfall, which can then be used during times of drought to supplement water supplies. This makes them a critical infrastructure for drought management.
4. Install hurricane ties: Hurricane ties are used to secure a home's roof to its foundation, providing resistance against high winds. Like storm cellars, they are important for protecting structures against severe weather but do not aid in drought prevention or management.
5. Use water conservation devices: Water conservation devices, such as low-flow toilets, showerheads, and efficient irrigation systems, reduce the overall demand for water. By decreasing water usage, these devices help to conserve water resources, which is particularly important during periods of drought when water is scarce.
The complete question is:
In 2002, Colorado was hit with one of the worst droughts in US history. What steps could Colorado take to reduce the effects of future droughts?
A) build storm cellars
B) buy more rain gauges
C) build dams
D) install hurricane ties
E) use water conservation devices
How would the H-zone in a contracted sarcomere differ from that of a relaxed sarcomere?
The H-zone in a contracted sarcomere differ from that of a relaxed sarcomere because H-Zone is narrower in contracted sarcomere. In a striated muscle sarcomere is small unit of myofibril. Between two Z line sarcomere is the repeated unit . Sarcomere is the very basic unit that makes up our skeletal muscle.
Answer:
H-zone is shortened in contracted sarcomere and regains its length in relaxed sarcomere
Explanation:
Sarcomere is the unit of striated muscle tissue. Its contraction and relaxation makes the muscle contract or relax. It is present between two Z-lines. Actin filaments anchor on Z-lines. Next to Z-line is the I-band which is a region of only actin filaments. Next to I-band is A-band region where both actin and myosin filaments are present. Within A-band, H-zone is present. H-zone does not have actin filaments and only consists of myosin filaments.
When a sarcomere contracts, the I-band and H-zone shorten which brings the Z-lines closer. Myosin binding sites are also uncovered on actin filaments and cross bridges are formed between them.
Which of the following terms describes a type of radiation that reaches the Earth from the Sun?
Answers
Oxygen, nitrogen, ultraviolet, carbon, visible light, and infrared
The correct answer is ultraviolet (UV) light, visible light and infrared (IR) light.
Radiation from the Sun or the sunlight, is a mixture of electromagnetic waves which ranges from IR to UV so, it also includes the visible light, which is in between IR and UV in the electromagnetic spectrum. Fusion in the core actually gives off high energy gamma (γ) rays from the Sun, but they are continuously absorbed by the solar plasma and re-emitted to very low frequencies.
Answer:
UV light, visible light, infrared.
Explanation:
solar radiation is made up of several different types of radiation, including infrared, ultraviolet, and visible light.
Describe what is happening to the chromosomes during each sub-phase of Meiosis I and Meiosis II.
The spindle gradually lenghtens during prophase.Towards the end of the prophase stage,the nuclear envelopes break down,and each of the microtubules reach from each cell pole to the cell's equator an