Answer:
hope it helps
Explanation:
As shown in the figure a cross between two heterozygous tall plants results in 25% h.0.m.0.z.y.gous tall, 50% heterozygous tall and 25% dwarf plants.
In which direction does air flow?
from east to west
from warm temperatures to cold temperatures
from areas of high pressure to areas of low pressure
from high elevations to low elevations
The answer is C. from areas of high pressure to areas of low pressure
what are the materials that are emitted during a volcanic eruption?
Answer:
The most common volcanic gases are water vapour, carbon dioxide, sulfur dioxide, and hydrogen sulfide. Small quantities of other volatile elements and compounds also are present, such as hydrogen, helium, nitrogen, hydrogen chloride, hydrogen fluoride, and mercury.
Why are vestigial structures not removed by natural selection ?
Answer:
because natural selection only acts on traits that impact reproductive success.
pls help only this q Explain how losing one part of this food chain will unbalance the whole ecosystem.
Answer: The extinction of dinosaurs will lead to increase in the prey which they used to consume before extinction.
Explanation:
Many years ago the dinosaurs used to dominate on earth as large mammals. They were plant eater herbivores and animal consumer carnivores. After the extinction of dinosaurs the ecological balance got disturbed. Flowering plants dominated the earth. The large and massive non-bird dinosaurs died but the bird like dinosaurs survived and they passed their traits to some lineages of modern birds.
How have the zooids adapted to survive predation on the continental shelf.
A greater stability of the biosphere would most likely result from
O A. decreased finite resources
O B. increased deforestation
O C. increased biodiversity
O D. decreased consumer populations
Answer:
C
Explanation:
Increased biodiversity helps diminish reliance on one species
Greater stability of the biosphere would most likely result from increased biodiversity (Option C).
Biodiversity refers to the observable variation in the life forms in a given ecosystem.Biodiversity greatly contributes to maintaining the homeostasis (internal equilibrium) in an ecosystem.In consequence, the loss of biodiversity (often due to human activity) can lead to the collapse of the ecosystem.In conclusion, greater stability of the biosphere would most likely result from increased biodiversity (Option C).
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Explain in detail the types of heterotrophic nutrition in plants. Give two examples of each type.
Answer:
HOPE IT HELPS..
MARK AS BRAINKLISTT
Heterotrophic nutrition can be one of three types , holozoic, saprophytic or parasitic. Holozoic nutrition can be seen in most vertebrates and some unicellular organisms like the amoeba. Saprophytic nutrition is where the organisms feed on dead and decaying matter. Examples include bacteria and fungi.
I’ll give points + brainalist (:
Please select the word from the list that best fits the definition
a molecule made of sugars
ATP
carbohydrate
lipid
protein
phospholipid
nucleic acid
Answer:
your answer is carbohydrate
Half of the Earth is dark in the image below. What is the dark half of Earth
experiencing?
A. A power outage
B. A solar eclipse
C. A lunar eclipse
D. Nighttime
Which process involves the deliberate alteration of an organism’s genetic material?
Answer:
recombinat DNA , epidemiology,
Describe how brine pools function
Explanation:
Brine pools are sometimes called sea floor "lakes" because the dense brine does not easily mix with overlying seawater. The high salinity raises the density of the brine, which creates a distinct surface and shoreline for the pool. When submarines dive into brine pools, they float on the brine surface due to the high density
5) It is said that the hottest layer of the earth
is the core (outer core and the inner core)
and that is where metal is found. Why
can't metal melt in the core?
Answer:
please give me brainlist and follow
Explanation:
The churning metal of the outer core creates and sustains Earth's magnetic field. The hottest part of the core is actually the Bullen discontinuity, where temperatures reach 6,000° Celsius (10,800° Fahrenheit)—as hot as the surface of the sun. The inner core is a hot, dense ball of (mostly) iron.
Who is the smartest man alive?
Answer: If its iq based then it would be William James
Explanation:
The initial velocity of an enzyme catalyzed reaction is determined by:_________.
a. graphically determining 1/2 Vmax.
b. calculating the amount of product formed over time while the amount of product is increasing in a linear manner.
c. calculating the amount of product formed over time from the beginning to the end of the reaction.
d. graphing the absorbances of known concentrations
Answer:
calculating the amount of product formed over time while the amount of product is increasing in a linear manner. ( B )
Explanation:
The initial velocity of an enzyme catalyzed reaction is determined by Calculating the amount of product formed over time while the amount of product is increasing in a linear manner
Initial Velocity of an enzyme is the described in relation to the amount of product produced per unit time at the beginning of a reaction.
The initial velocity of an enzyme reaction is determined by calculating the amount of product over time while it is increasing in a linear manner (Option B).
What is an enzyme?An enzyme is a protein that may act as a biological catalyst for a particular chemical reaction.
Enzymes work by speeding up the velocity of a given chemical reaction.The initial velocity of an enzyme can be calculated by determining the amount of product of the chemical reaction.In conclusion, the initial velocity of an enzyme reaction is determined by calculating the amount of product over time while it is increasing in a linear manner (Option B).
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Country A is rich in natural resources. These resources are evenly distributed across the country. Country B has resources concentrated at few places. The government of Country B is hindering the resource distribution due to vested interests. What could be a possible impact of this scenario?
A.
Country B will have high level of poverty.
B.
Country A will have high level of poverty.
C.
Country B will have low level of poverty.
D.
Country A and B both will have low level of poverty
Answer:
country b will have high level of poverty
Which atmospheric layers of Earth used by orbiting satellites
Answer:
Exosphere. This is the outermost layer of the atmosphere. It extends from the top of the thermosphere to 6,200 miles (10,000 km ) above the earth. In this layer, atoms and molecules escape into space and satellites orbit the earth.
Drag each label to the correct location on the image.
Classify the following actions as ethical or unethical actions.
Answer:
Ethical:
-Giving a sick cow antibiotics.
-Euthanizing a horse suffering from an incurable disease and pain.
Unethical:
-Disclosing medical records of a patient without consent from the pet owner.
-Concealing information about a genetic defect from a dog breader.
Explanation:
In the field of veterinary medicine, ethics is a set of moral norms and mandates of conduct for veterinarians in which the welfare of the animal and the prevention of its suffering are prioritized, at the same time as the search for clear and detailed information regarding the use of animals for different purposes, be they commercial or otherwise. Thus, any activity that prevents the suffering of an animal will be considered ethical, at the same time that any activity that produces immediate or future suffering to an animal will be considered unethical.
In what way are thermal pollution and eutrophication similar in their impacts on aquatic ecosystems?
A) Both processes are caused by sewage effluent.
B) Both processes occur often in the spring and rarely in the winter.
C) Both processes increase the nutrients that are available in the freshwater ecosystem.
D) Both processes can lead to lowered dissolved oxygen and reduced biodiversity in lakes and rivers.
Answer:
“Eutrophication is an enrichment of water by nutrient salts that causes structural changes to the ecosystem such as: increased production of algae and aquatic plants, depletion of fish species, general deterioration of water quality and other effects that reduce and preclude use”.
Explanation:
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Why is it important that gametes be haploid?
I GOT YOU SO EASY
Answer:because when the sperm and the egg fuse together the cell will have 46 chromosomes.
Answer:
It is important that chromosomes are haploids because when the sperm and the egg fuse together the cell will have 46 chromosomes. polar bodies are haploid cells produced during meiosis which are smaller in size compared to the gamete and will disintegrate
Explanation:
Hope this helped Mark BRAINLIEST!!!
How are mitosis and meiosis the same and different?
In a one-group pretest-posttest design affected by the problem of testing effects, the reduction found on the posttest is likely to be the result of _____
Answer:
taking the pretest
Explanation:
A one-group pretest–posttest design is a type of research design generally used in behavioral research aimed at estimating the treatment effects on the sample. In this experimental design, the target group of participants is first pre-tested on the dependent variable and, subsequently, post-tested after the administration of a treatment. In consequence, the participants of the target group receive the same treatment and assessment. The problem of testing effects indicates that testing may become a problem when the pretest may change participant's behavior. When there are statistically significant differences between the pretest and posttest data, it is possible to support the working hypothesis.
#14 According to the behaviorist theories of language acquisition, language is __________.
A. learned through imitation and reinforcement
B. an innate ability in humans
C. a behavioral trait of all humans and animals
D. both a mixture of nature and nurture
Answer:
A. learned through imitation and reinforcement
Explanation:
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According to the behaviorist theories of language acquisition, language is learned through imitation and reinforcement. The correct option is A.
What is behaviorist theory?The central tenet of behaviorism is that all actions are acquired through interactions with the environment. According to this learning theory, environmental circumstances have a much greater impact on behavior than innate or inherited traits.
Skinner (1985) equated learning a language to verbal behavior in accordance with behaviorist theory. Instead, of attempting to explain the brain structures that underlie these kinds of activities, language acquisition can be observed, just like any other behavior.
Therefore, the correct option is A. learned through imitation and reinforcement.
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Both species of garter snakes prey on the California newt, Taricha torosa, a small amphibian that produces a potent neurotoxin (TTX) in its skin. However, neither species of garter snake is affected by TTX. The resistance to TTX is associated with mutations in the SCN4A gene. Which of the following best supports a claim that
a. TTX resistance arose independently in T.
b. atratus and T.
c. sirtalis
Complete question:
Both species of garter snakes prey on the California newt. Taricha torso, small amphibian that produces a potent neurotoxin (TTX) in its skin. However, neither species of garter snake is affected by TTX. The resistance to TTX is associated with mutations in the SCN4A gene. which of the following best supports a claim that TTX resistance arose independently in T. atratus and T. sirtalis?
A. The stomach contents in fossils of both species include the remains of food items that contains TTX.
B. Both species of snakes possess the SCN4A gene.
C. The two species of snakes have different genetic mutations in the SCN4A gene.
D. T. atratus and T. sirtalis are sister species that share many of the same morphological features.
Answer:
C. The two species of snakes have different genetic mutations in the SCN4A gene.
Explanation:
These are two different species that feed on the same amphibian species and that developed resistance to TTX. Resistance to the toxic is associated with mutations in the SCN4A gene. So probably both species by separated developed different mutations in the gene that led them to be resistant to the toxin.
Supporting the fact that natural selection is not random, both species might have become resistant to TTX through different mutations in the same gene. Both species are feeding on the California newt that produces neurotoxin in the skin. Animals that feed on this amphibian need to be resistant to the toxin to avoid death and keep preying. TTX might be acting as a modeling pressure that led snakes to develop resistance to the toxin, favoring the same phenotype but independently.
A. The stomach contents in fossils of both species include the remains of food items that contain TTX. → Food items with TTX in the stomachs do not mean that species were resistant to the toxin. And if they were, it does not mean that species developed the resistance independently or not.
B. Both species of snakes possess the SCN4A gene. → The fact that both species have the gene does not mean that they have mutations in the gene
C. The two species of snakes have different genetic mutations in the SCN4A gene. → That both species have different mutations in the same gene means that they evolved independently from each other. They suffered different mutations in the same gene that led them to express the same resistance phenotype.
D. T. atratus and T. sirtalis are sister species that share many of the same morphological features. → Morphological features do not necessarily reflect molecular features. The fact that they are similar sister species does not say anything about the SCN4A gene.
The condition that best supports this experiment is the two species of snakes have different genetic mutations in the gene described above.
What do you mean by Mutations?Mutations may be defined as sudden, stable, and inheritable changes in the genetic material of an organism.
Both species of snake have different mutations in the same gene means that they evolved independently from each other. They undergo different mutations in the same gene that led them to express the same resistance phenotype.
Therefore, the condition that best supports this experiment is the two species of snakes have different genetic mutations in the gene described above.
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Need help on this please!!!
Answer:
1. D
2. G
3. C
4. A
Explanation:
An endothermic reaction is one that absorbs or uses heat energy. Its polar — er thermal — opposite, exothermic describes a reaction that makes or gives off heat. It can be easy to confuse the two, but if you can remember that endo means “in” and exo means "out,". Ectotherm, any so-called cold-blooded animal—that is, any animal whose regulation of body temperature depends on external sources, such as sunlight or a heated rock surface. The ectotherms include the fishes, amphibians, reptiles, and invertebrates.
Larger animals can keep their heat for a longer time than smaller animals. A small animal has a greater surface area for its size compared to an adult animal. That is why small animal, as well as a baby, is more prone to heat loss. Larger animals can keep their heat for a longer time.
Under certain conditions, it is possible to get more work out of a machine than you put into it.
Please select the best answer from the choices provided
T
F
Answer:
f :)
Explanation:
Give an example of physical evidence used to organize Earth’s history on the geologic time scale.
Answer:
The Earth is 4.6 billion years old. Some examples of events listed on the geologic time scale include the first appearance of plant life on Earth, the first appearance of animals on Earth, the formation of Earth's mountains, and the extinction of the dinosaurs.
Explanation:
please mark this answer as brainliest
Which of the following is NOT TRUE about blood pressure?
A. It measures how much the blood is pressing against the vessels as it is pumped through
the system
B. It is affected by both genetic and environmental factors.
C. Hypotension indicates good health
D. hypertension indicates that your blood needs more pressure to be moved through the
veins
Answer:
c.Hypotension indicates good health
Using the figure, match the following
The muscle fiber (cell) is indicated by
Label A
Label B
Label C
Label D
Answer:
Hope it helps
Explanation:
The label A represents mitochondria.
The mitochondria are also called the powerhouse of the cell which converts glucose to energy-rich molecules of ATP.
Label B represents the nucleus.
The nucleus contains the genetic material or DNA, RNA, nucleolus, chromatin fibers, and proteins. It contains the chromosomes which control the hereditary characteristics.
Label C represents the lysosome.
Lysosomes contain digestive juices which break down large cell parts and large molecules and help in intracellular digestion.
Label D represents rough endoplasmic reticulum having ribosomes.
The rough endoplasmic reticulum provides a surface for protein synthesis. It is also used to transport cellular contents from one cell to another.
what body systems help when taking a test