During the Paleozoic era, marine organisms and land organisms died due to environmental changes such as warmer temperatures and drier soil.
What is the paleozoic era?The Paleozoic era is the time when the Earth's condition was still unstable. This epoch lasted about 340 million years. Signs of life such as single-celled creatures (microorganisms), small animals without backbones, types of fish, and types of algae or grasses began to be found.
Natural conditions that began to change with warm temperatures and drier soil caused marine and land organisms to die so the Mesozoic era was also referred to as the age of reptiles because the earth was dominated by large reptiles such as dinosaurs and Atlantosaurus.
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II. Which animal is the top predator in many wetlands?
A. Raccoons
B. Alligators
C. Snakes
D Owls
Answer:
Its B. Alligators. Yup they are the top predators
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Answer:
B alligators cause wet and crocodals are wet
Explain why is important to know some biology in the middle of a pandemic
Biology - need ASAP. will mark brainliest
Describe the main ways in which the blood helps you to avoid infection. Include a description of the parts of the blood involved.
(6 marks)
Answer:
Blood brings oxygen and nutrients to all the parts of the body so they can keep working. Blood carries carbon dioxide and other waste materials to the lungs, kidneys, and digestive system to be removed from the body. Blood also fights infections, and carries hormones around the body.
Explanation:
How many alleles are typically found for mitochondrial genes?
1. 8
2. 1
3. 4
4. 2
Answer:
The answer is 2.1
Answer:
two alleles
Explanation: because This dynamic aspect of mitochondrial transmission from cell to cell is termed mitotic segregation. In Mendelian genetics, a person's nuclear DNA can contain, at most, only two alleles for any particular autosomal gene, one paternally derived (e.g., allele “A”) and the other maternally derived (e.g., allele “B”).
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Which of the following answers is NOT correct with regard to convection currents?
A. Convection currents in magma drive plate tectonics.
B.Convection currents in magma are a result of density differences.
C. Convection currents play a role in the movement of Earth’s inner core.
D. Convection currents in magma are caused by temperature differences.
Answer: C....Convection currents play a role in the movement of Earth’s inner core
The statement which is not correct with regard to convection currents is as follows:
Convection currents play a role in the movement of Earth’s inner core.Thus, the correct option for this question is C.
What is Convection current?Convection current may be defined as a procedure that significantly involves the movement of energy from one place to another. It is basically the existence of current in a fluid through convection.
The inner core of the earth has appeared as solid as compared to other parts like the crust and mantle. Most liquid particles are definitely found on the mantle of the earth's surface.
Due to the presence of excessive liquid particles and compounds, the convection current is significantly noticed there.
Apart from this, magma is also a fluid that derives current through convection. It produces in a number of ways like magma driving plate tectonics, density differences in the magma, and temperature differences.
Convection currents are basically the movement of fluid with respect to temperature or density difference within the material.
Therefore, the correct option for this question is C.
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What are the 6 lobes of the brain and where are they located?
Answer:
Frontal lobe.
Parietal lobe.
Occipital lobe.
Temporal lobe.
Limbic lobe.
Insular cortex.
The four lobes of the brain are the frontal, parietal, temporal, and occipital lobes (Figure 2). The frontal lobe is located in the forward part of the brain, extending back to a fissure known as the central sulcus. The frontal lobe is involved in reasoning, motor control, emotion, and language.
Explanation:
What provides the genetic material of an organism
Answer:
its parents.
Explanation:
How do free energy machines work?
Explanation:
The machine is plugged into an electrical source,which gets plugged the motor's wheel spinning.The machine is then unplugged and the wheel keeps spinning under its own interia. Then electrical energy is extracted from the spinning wheel.
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what do the arguments for and against the use of stem cells in medical research share?
Answer: Stem cell research can potentially help treat a range of medical problems. It could lead humanity closer to better treatment and possibly cure a number of diseases:
Parkinson’s Disease
Alzheimer’s Disease
Heart Diseases, Stroke and Diabetes (Type 1)
Birth Defects
Spinal Cord Injuries
Replace or Repair Damaged Organs
Reduced Risk of Transplantation (You could possibly get a copy of your own heart in a heart-transplantation in the future
Stem cells may play a major role in cancer
Better treatment of these diseases could also give significant social benefits for individuals and economic gains for society
Cons
"We should not mess with human life."
"Humans should not be trying to play God"
Some argue that stem cell research in the far future can lead to knowledge on how to clone humans. It is hard to say whether this is true, but we have seen devastating consequences of other research-programs, even with good intentions, such as nuclear research.
Stem cells are cells, which have the ability to transform into many different types of cells. The stems cells have the potential to specialize in any type.
The stem cells are extensively used for research, curing diseases, and especially in developing prosthetics. The stems cells provide new cells for the growth and development of the replaced and damaged cells.
The arguments for and against the use of stem cells are:
Arguments for the use of stem cells in medical research are:
1. The stem cells enhance the growth and development of healthy skin tissue.
2. The cells can be used to enhance the production of collagen.
3. The study of stem cells helps in understanding the causes of disease.
Arguments against the use of stem cells in medical research are:
1. The use of stem cells for research harms human life and dignity.
2. People believe that killing blastocysts or stem cells is equal to taking a human life.
3. However, the transplant of stem cells can be rejected by the patient's body, therefore, can cost the life of the patient.
Therefore, the use of stem cells for research can be fruitful or disadvantageous.
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Which of the following represents a cross between two heterozygous plants?
A. Ww x WW
B. ww x WW
C. Ww x Ww
D. WW x WW
How do human lifestyles affect sustainability?
What characteristic do sea stars and brittle stars have in common?
Both have flexible joints.
Both have teeth-like feeding structures.
Both use tube feet to catch prey.
Both have tentacles.
Answer:
They typically have a tough, spiny surface, which inspired their name (in Greek, echinos means “spiny” and derma means “skin”). They also have the unusual ability to regrow lost body parts, and sea stars and brittle stars can regrow arms if broken off or eaten
Explanation:
Sea stars and brittle stars both use tube feet to catch prey. Therefore, option C is correct.
What are sea stars and brittle stars?Echinoderms with a star form that belongs to the class Asteroidea are known as starfish or sea stars. These terms are frequently used incorrectly to refer to ophiuroids, which are properly called brittle stars or basket stars in common usage. Due to their membership in the class Asteroidea, starfish are also referred to as asteroids.
The benthic (bottom-feeding) fauna of the maritime environment includes brittle stars. They belong to the Phylum Echinodermata, which includes marine organisms with radial symmetry, five components, and frequent spines. They are commonly referred to as echinoderms.
Sea stars and brittle stars both use tube feet to catch prey. Therefore, option C is correct.
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if epigenetic changes take place above the level of the genome , what would be an example of a change at the level of the genome ?
Answer:
epigenetics chamges take place.
Epigenetics is the examination of the way cells manipulate gene interest without converting the DNA series." Epi-"approach on or above in Greek, and "epigenetic" describes elements past the genetic code.
Epigenetic changes are adjustments to DNA that modify whether or not genes are grown to become on or off. These adjustments are connected to DNA and do now no longer alternate the series of DNA constructing blocks. Within the entire set of DNA in a (genome), all the adjustments that modify the interest (expression) of the genes are referred to as the epigenome.
Because epigenetic changes assist decide whether or not genes are grown to become on or off, they affect the manufacturing of proteins in cells. This law facilitates making sure that everyone produces the handiest proteins which might be essential for its function. For example, proteins that sell bone boom aren't produced in muscle cells.
What is the epigenetic pattern?Patterns of epigenetic change range amongst individuals, in one-of-a-kind tissues inside an individual, or even in one-of-a-kind cells inside a tissue. Environmental influences, together with a person’s food plan and publicity to pollutants, can affect the epigenome. Epigenetic adjustments may be maintained from cell to as cells divide and, in a few cases.
Hence concluded that Epigenetics changes and causes cancers, by changing the genome, epigenome, or both.
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Can hydrogen peroxide be broken down by catalysts other than those found in a living system? What is/are the control(s) and why are they needed?
Answer:
hi I not talk spanish
Explanation:
not talk spanish
What caused the Kingdom of Life to change? Give 3 reasons minimum.
Answer:
Due evolution, discoveries and having both characteristics.
Explanation:
The Kingdom of Life change due to evolution in the body of organisms, discoveries of new organisms that are different from plants and animals. There are some organisms that have both plant and animal characteristics so it can't be placed in plant or animal kingdom so that's why the kingdom of life changes from two kingdom system to 5 kingdom system.
Which of the following statements is correct about air temperature?
When air temperature is higher, the weather is warmer.
Warm air falls to the ground.
Freezing air temperatures increase the chances of rain.
When air temperature is higher, the weather is colder.
Answer:
Answer is freezing air temperatures increases the chances of rain
Explanation:
Answer:
When air temperature is higher, the weather is warmer
All levels of biological organization and discription?pllsss paki sagutan po
A student has several pet hermit crabs. He wants to determine how the hermit crabs choose which shell they inhabit. He thinks that the crabs choose their shells based on the shells' color and wants to design an experiment to test this. Which of these steps should the student include in his experiment? A. He should add shells that are different colors, but the same size and type, to the tank and observe which shells the hermit crabs choose. B. He should observe hermit crabs in their natural environments and determine how shells help protect them from predators. C. He should place the hermit crabs in different tanks and change the temperatures in the tanks to see if it effects their shell selection. D. He should gather shells that are different sizes and different colors, place them in the tank with the hermit crabs, then observe which shells they choose. Reset Next Question
The coronavirus attaches to a membrane protein called
Answer:
M glycoprotein..
The coronavirus attaches to a membrane protein called M glycoprotein..
how to control diarrhoea
Answer:
Diarrhea should go away in a few days without treatment. until you feel better, rest, drink enough fluids, and watch what you eat.
Does mass alone determine whether an object will float or sink? Explain
Answer:
yes because if the mass is heavy it gonna sink, if its light its gonna float
Explanation:
How is food produced?
Answer:
Most food produced for the food industry comes from commodity crops using conventional agricultural practices. Agriculture is the process of producing food, feeding products, fiber, and other desired products by the cultivation of certain plants and the raising of domesticated animals. On average, 83% of the food consumed by humans is produced using terrestrial agriculture.
Explanation:
Answer:
Explanation:
Most food produced for the food industry comes from commodity crops using conventional agricultural practices. Agriculture is the process of producing food, feeding products, fiber, and other desired products by the cultivation of certain plants and the raising of domesticated animals.
Which of the following statements is the of asexual reproduction?
A. It produces offspring
B. It produces genetically identical offspring
C. It produces genetic diversity
D. It produces offspring that are resistant to antibiotic.
The answer is B because the new cells formed during asexual reproduction are formed by mitosis there is no genetic diversity.
Find 2 ways that natural gas forms. List the steps of the two carbon pathways below. Label each location with A for atmosphere, B for the biosphere, G for geosphere, or H for hydrosphere. Use P for the anthroposphere.
Answer:
Biogenic and thermogenic
Explanation:
Biogenic and thermogenic are the two ways or mechanism that is responsible for formation of natural gas. Biogenic gas is formed with the help of methanogenic organisms that is present in marshes, bogs, landfills, and shallow sediments. Thermogenic gas is formed from organic matter that is buried in the deeper earth where the temperature and pressure are very high.
The organic pathway of the carbon cycle is the pathway in which carbon moves from atmosphere, through producers, herbivores and other organisms in the ecosystems, and converted back to the atmosphere.
In geological pathway, carbon moves from the atmosphere, through the ocean to rocks and the mantle, and then back to the atmosphere.
what is pseudopodia?
Answer:
Pseudopodia are temporary and cytoplasm-filled parts of the cell membrane that are able to change their form in order to move.
Explanation:
Pseudopodia are temporary and cytoplasm-filled parts of the cell membrane that are able to change their form in order to move. They are used in some eukaryotic cells to move around or to eat. Most cells that do this are called amoeboids. The amoeba is a common example. ... Pseudopods can also capture prey by phagocytosis.
an example of prokaryotic cell is a ___ cell
Answer:
A bacterium
Explanation:
Prokaryotic cells lack a nuclear envelope, so what would be their nucleus is just kind of floating around inside of them.
What is a complex Sugar? Please a specific answer(make more sense)
Answer:
Complex carbohydrates are MADE up of sugar molecules that are strung together in long complex chains, complex carbohydrates are found in food like peas, beans, whole grains and vegetables.
Explanation:
Both SIMPLE and COMPLEX carbohydrates are turned into glucose (blood sugar) in the body and are used as energy.
I really hoped this helped some, I tried to make it specific :[
Use your observations from the lab activity/lab video and the data tables to explain how salinity affects the way cold water from melting ice mixes with warm water.
MUST DO THE GIZMO LAB
https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fj.mp%2f2xEVbH2&c=E,1,W18vDiET_qY95IoljRmfTZ1KOmwgV8TTajW0p-106B4yZ2Z4Hb0F9LUk21rjhlfridBb9NkRGcIDSjHYFxZDLsOn8iCWP2EKd-ODPF3IQrt5d24,&typo=1
Answer:
The link doesn't work but it is known that when you add salt to ice, the ice not only melts but will actually get colder.
hope this at least helped you :>
What is tendonitis?////////////////////////////////////////////////////////
Try to move the different parts of the body
by moving it back and forth, side to side,
rotating, and swinging.
The given question is incomplete, however, the missing part is as follows:
body parts movement
neck _____
lower arm _______
upper arm ________
wrist __________
shoulder _________
skull _________
knee _________
hipbone _________
elbow _________
ankle _________
Answer:
The correct answer is given as follows:
Explanation:
A. side to side
B. swinging
C. rotating
D. rotating
E. rotating
F. back and forth
G. swinging
H. side to side
I. back and forth
J. rotating