Over the decades local and global ice ages have lowered sea levels. As a result, there is often a decline in marine diversity due to - factors like salinity and temperature of water.
Salinity is the measure of the amount of salt present in any ocean or sea water. High salinity makes it impossible for marine life to survive. Similarly, the temperature of water should be maintained according to every organism's need. Like- Deep sea has a low temperature as compared to shallow sea, due to sunlight. So, deep sea creatures cannot survive in shallow water temperature and shallow water creatures cannot survive in deep sea.
Microscopic, single-celled organisms that have a complex structure similar to animals and plants are known as
In which environment would primary succession take place? Check all that apply.
an abandoned field
a cooling lava flow
a valley under a glacier
an unused farm
a burnt forest
a deserted mine
Primary succession happens in a place where there is no soil cover or it is removed.
an abandoned field- Secondary; because there is cover of soil left, even if vegetation is removed.
a cooling lava flow- Primary; volcanic events lead to loss of soil layer, so this would lead to primary succession
a valley under a glacier- Primary; retreating glaciers are lead to primary succession
an unused farm-Secondary; the soil cover is still present
a burnt forest- Secondary; soil cover is still left for vegetation to start over again
a deserted mine- Primary; because there would be barren rocks left, so soil would be formed by pioneer species first.
Answer:
B
C
Explanation:
which reproductive pattern would be associated with a species that is most likely to undergo rapid evolutionary change
Wendy added the same amount of water to two plants of the same variety. She placed them in the sun and added fertilizer to one plant but not to the other. She recorded the height of the plants after a week. What is the independent variable in the study?
Time
Fertilizer
Height of plant
Volume of water
Answer:the dependent variable is height
Explanation:
The height of the plant depends on the amount of fertilizer or if any.
If the lithosphere moved less , how would the surface of the earth be affected
Answer:
The pushed and pull of tectonic forces would be decreased.
Explanation:
Plate tectonics is defined as the movement of the rigid plates around the Earth's surface. The lithosphere which is an outer portion of the planet, which contains the upper mantle and both the continental and oceanic crust, is a thick rigid portion because it is relatively cold.
. It is with the help of the mantle’s convective motions that the lithosphere is broken into plates and move them around the surface of the planet.
These plates may tends to move away from each other or as well collide with each other. The ocean basin process is formed .
Movement of tectonic forces hugely affects the composition of the the gases and other substance of atmosphere, whenever CO2 is recycled out from the mantle through the volcanoes. It is the influence of the tectonic plate movements that cause volcanoes and earthquakes.
What are humans made of
images below show the skeleton of a monkey in the vertebrate or backbone of a human.
at the end of the monkey backbone and tail bones at the end of the human backbone is a single bone called the coccyx.what type of structure is the coccyx and what does it indicate about the relationship between monkeys and humans
The coccyx is a vestigial tailbone in humans, indicating a shared evolutionary history with other primates. While no longer a functional tail, it does provide attachment for ligaments and muscles and is a remnant of our primate ancestors who had tails. Bipedal locomotion in humans led to structural skeletal changes, differentiating us from other primates.
The coccyx, also known as the tailbone, is the small triangular bone at the end of the human vertebral column. It is a vestigial structure, which is a type of structure that is a remnant of an evolutionary past where it served a greater purpose. In the case of the coccyx, it is an evolutionary remnant of an ancestral species that had a functional tail. Today, while the coccyx no longer serves as a functional tail for humans, it still plays a minor role as an attachment site for tendons, ligaments, and muscles.
The coccyx indicates that humans share a common ancestor with other primates, such as monkeys, that had tails. Throughout the evolutionary process, humans adapted to bipedal locomotion, which eventually led to structural changes in the skeleton, including the eventual reduction of the tail to what we now observe as the coccyx. This change is one reason why humans have a different skeletal structure compared to our primate relatives, including a more centrally located foramen magnum, an S-shaped spine, and a more robust lumbar region, all adaptations for upright, bipedal walking.
Which particle has the most energy ice water steam or no difference
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This is the process by which organisms acquire and pass on novel traits through generations.
The correct answer is biological evolution.
Biological evolution refers to the procedure via which the features of species modify over consecutive generations, by means of natural selection and genetic variation. It is most usually illustrated as modifications in the frequencies of the gene in the populations.
Evolution by natural selection is one of the followed authenticated theories in the history of science, encouraged by proof from a broad kind of scientific disciplines involving geology, palaeontology, developmental biology, and genetics.
Which scientist sought to disprove Needham’s experimental method by boiling his broth in a sealed container first, as he believed the broth was contaminated by microorganisms before it was sealed?
what are the parts of the heart?
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Imagine that your finger is accidentally caught in a closing car door. Describe the path of stimulus and response that would happen in the nervous and musculoskeletal systems.
What stage of coal is most often used to heat houses and burns “cleanly”
Which of the following is the balanced chemical equation for photosynthesis?
Answer:
your answer is A
Explanation:
What is the purpose of the “spine” of vegetation in the Fusionopolis building? Check all that apply. It insulates the complex in the summer. It insulates the complex in the winter. It provides passive cooling in the summer. It provides passive cooling in the winter.
The correct answers are options:
It insulates the complex in the winter.
It provides passive cooling in the summer.
The Fusionpolis is a building present in the Singapore. The building is covered by the spine vegetation. The spine vegetation is well known for the insulation against the heat, this makes them best for maintaining the temperature in the building. These spines provide the insulation in the winters, when the outside atmosphere is too cold, and in summers, the transpiration of the spines help in cooling down the temperature of the building.
Answer:
B,C
Explanation:
Edge 2020
household energy usage gizmo
A household energy usage gizmo is a device used to track and understand energy consumption in a home. It demonstrates which appliances use the most electricity, allowing alterations towards more energy-efficient habits.
Explanation:The household energy usage gizmo is a tool used mainly in physics and environmental science to measure and understand the energy consumption patterns in a household. This device records the amount of electricity used by different appliances and helps users recognize where most energy is consumed. For instance, a household energy usage gizmo could show you how much energy your refrigerator uses in comparison to your heating system. By understanding these patterns, we can make changes to our energy usage habits, achieving more energy-efficient households. Therefore, these gizmos are important not only from a physics perspective, but also in promoting sustainable and eco-friendly living.
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Final answer:
To manage household energy costs effectively, limit the usage of high-power devices and consider using energy-efficient options like compact fluorescent light bulbs.
Explanation:
Household energy usage gizmo involves calculating energy consumption by multiplying power rating by the hours of use. To spend less than R 150,00 per month, you can limit the use of high-power devices; this is because efficiency is crucial in energy-saving, especially with devices like compact fluorescent light bulbs.
What is the force that keeps the moon in orbit around the Earth? A. momentum B. gravity C. inertia
Answer:
B.
Explanation:
Gravity. It helps keep all the planets in play.
Gender, age, heredity, race, and the environment are all examples of
Gender, age, heredity, race, and the environment are all significant factors that influence various aspects of human health. These elements can affect the likelihood of developing certain diseases, physical and mental health outcomes, and the effectiveness of treatments. It is essential to recognize how each factor individually and collectively impacts health to improve health outcomes and strategies.
Gender can influence health due to biological differences and social roles that affect exposure to risks and health behaviors. Age is a critical determinant as the risk for many health issues increases with age. Heredity plays a vital role because genetic predispositions can affect the likelihood of certain conditions. Race can affect health due to both biological diversity and differences in socio-economic factors that contribute to health disparities. Lastly, the environment encompasses physical, social, and economic conditions that can have significant health impacts. Understanding these factors is paramount in developing public health policies, prevention strategies, as well as individual health plans. Only by considering each of these can a comprehensive approach to health care be achieved.
Discuss some society issues regarding biotechnology.
Question 1(Multiple Choice Worth 4 points)
Which of the following is an example of an endothermic process?
Condensing
Freezing
Boiling
Solidifying
Sometimes a mutation is beneficial to organisms fitness in can be passed onto the offspring. What is likely to happen to the mutation over many generations?
A. Any genetic variation will not persist because the mutation is a one time event.
B. There is a random chance of the mutation spreading to other individuals in the population.
C. The mutation will become more common in offspring and increase the genetic variability in the gene pool.
D. Genetic recombination is the only way that variations can be passed on so the mutation will die out.
Answer:
C. The mutation will become more common in offspring and increase the genetic variability in the gene pool.
Explanation:
The mutation which is beneficial to the organism's fitness occurs in the genetic cell of the individuals and after the fusion with the opposite gametic cell during fertilization it passes to the offsprings.
So these offsprings reproduce the mutation will pass to some more offsprings and like this mutation will become more common in the population which will result in increasing the genetic variability of the in the gene pool. So the correct answer is C.
Toxicodendron rydbergii is the scientific name for western poison ivy. Toxicodendron radicans is the scientific name for eastern poison ivy. Which of the following statements are true?
Answer:
Western and eastern poison ivy belong to the same genus.
Explanation:
The scientific name of the species was created in order to create a universal nomenclature for living beings. This way, scientists in Brazil, for example, could talk to scientists in Africa and Japan about the same living thing without creating confusion about names. In short, the scientific name is accepted by all languages and all dialects and idomous expressions.
The scientific name is formed by two words in Latin. The first word refers to the genus to which the organism belongs, the second name refers to the specific epithet. The two names together form the species name.
For this reason, we can say that if Toxicodendron rydbergii is the scientific name for western poison ivy and Toxicodendron radicans is the scientific name for eastern poison ivy, western and eastern poison ivy belong to the same genus.
Sometimes a few individuals are isolated from the rest of the population and can have very different gene frequencies. This is called
The relative frequency of the gene variant expressed as per cent or fraction is called gene frequency. The isolation and the varying gene frequency is due to the Founder's effect.
What is Founder Effect?The loss of the genetic diversity in the new population of the organism that diversified and got isolated from the ancestral population.
This effect depicts the variation in the gene frequencies when the few organisms are isolated from the rest of their population. It can be said as a type of genetic drift in which the allele frequencies of the older population and the new population of the same organism gets differed.
Therefore, the Founder effect is the variation of the gene frequencies in the isolated population.
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What is the haploid number of chromosomes in corn?
Construct a concept map that shows how a population of bacteria can develop resistance to antibiotics.
The attached picture shows how bacteria gain antibiotic resistance. Firstly, a few individuals attain a beneficial mutation in their genetic material that accords them the capability to survive in an antibiotic. The individuals are hence able to survive and reproduce more than those individuals without the mutation. There is, therefore, a genetic shift in the population in favor of the resistant genotype. After generations, the whole population becomes antibiotic resistant.
Bacteria can develop antibiotic resistance via a process called natural selection. Those with a mutation that makes them resistant survive and replicate, passing on the trait. Misuse or overuse of antibiotics can accelerate this process.
Explanation:A population of bacteria can develop antibiotic resistance through a process called natural selection. These bacteria encounter an antibiotic, and those that have a naturally occurring mutation that makes them resistant survive the antibiotic exposure, while those without this trait do not.
When the surviving bacteria replicate, they pass on this antibiotic-resistant trait to their offspring, leading to the development of a population that is resistant to that specific antibiotic. This process can be accelerated through the misuse or overuse of antibiotics, as this can apply additional selective pressure on the bacteria to develop resistance.
Our concept map would therefore include these key factors: bacteria, antibiotic exposure, natural selection, mutation, survival and reproduction, and antibiotic misuse or overuse.
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predict if the sensory nerves in a persons foot are nonfunctional, would the person feel pain if the foot was severely burned
If the sensory nerves in a foot are non-functional, the person would not feel the pain if the foot was severely burned.
What are nerve cell?A type of cell that receives and transmits messages from the body to the brain, as well as from the brain back to the body.
A modest electrical current is used to send the messages.
Nerve cells are also known as neurons.
Nerve cells feel the electrical impulse and carry them to the brain.
Thus, if sensory nerves on a foot are non-functional, then the person would not feel the pain if the foot was severely burned.
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Dora rolled a marble down a ramp in recorded the potential energy and kinetic energy of the marble at different positions on the ramp as shown in the table below which is the constant variable in this experiment
Answer:
The mass of the marble
True or False: Meiosis results in two genetically identical diploid cells.
if more than one organism is in the same niche, what might happen?
The competitive exclusion principle states that two species cannot occupy the same niche. When two species compete for the same habitat and resources, the end result is that one species eliminates the other.