BIOLOGY HIGH SCHOOL

At what age do a cow's permanent canine teeth begin to erupt? A. Cows don't have canines B. 2 to 2.5 years C. 3 years D. 3.5 to 4 years E. 5-6 years

Answers

Answer 1
Answer:

Answer:

B.2 to 2.5 years

Explanation:

Cows begin to show their permanent teeth typically 2 to 3 years, so the answer that best suits this is B.2 to 2.5 years

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Limiting contact between gamma rays and healthy tissue is important because?

Answers

Gamma ray is high-frequency electromagnetic radiation. It is known that gamma rays are able to damage DNA molecules in the cells by interrupting DNA strands. That characteristic of gamma rays is used in the treatment of tumors. An idea was that gamma rays will damage DNA molecules of tumor cells and, consequently, prevent uncontrollably divisions of tumor cells. But, in treatments, it is very important to limit contact between gamma rays and healthy tissue. This way it will be minimized damage of DNA molecules in healthy cells.

Answer: gamma rays are high energy and may cause damage to healthy cells.

Explanation: I took the test!!

All of the following are renewable sources of energy except _______ power. A. nuclear B. solar C. geothermal D. wind

Answers

Answer: The correct answer for the fill in the blank is- A) Nuclear power.

Renewable sources of energy are those resources that can be replenished or renewed naturally. They do not run off that is they are inexhaustible.

Example of renewable sources- Solar energy, wind energy, geothermal energy, hydro-power.

On the other hand, non renewable source of energy are exhaustible and can not be replenished naturally.

Nuclear power ( resulted due to heat produced in the fission of atoms) is non- renewable source of energy. This is because the fuel that is used in most of the nuclear fission reactions is uranium, which is found in fixed amount on earth.      


nuclear is not a renewable source because uranium is used for nuclear power and uranium is limited.

What is the best way to treat fungal infections like athletes foot

Answers

you can buy anti fungal spray and put it in your shoes. If you sweat a lot, change your shoes twice a day. Try to find shoes that allow air flow. If anti fungal spray isn't available baking soda works too.

Which of the following is inaccurate in relation to viruses?a. They seek a specific host.
b. They have nucleic acid core.
c. They feature a capsid.
d. They reproduce independently.

Answers

The answer is D.They reproduce independently. It is false because they need a host and can't survive by themselves.

♡♡Hope I helped!!! :)♡♡
d. They reproduce independently.

Which process allows organisms to keep internal conditions relatively constant despite changes in external conditions? Homeostasis



Hibernation



Hypothermia

Answers

Answer:

Homeostasis

Explanation:

Walter Cannon elaborated the concept of homeostasis from the investigations

carried out by Claude Bernard, creator of Experimental Medicine.

The concept of homeostasis, as Cannon formulated it in his capital work,  the Wisdom of the Body implies a dynamic equilibrium, maintained interactively by the constant dialectic between internal kinetics and  variations of the external environment. Homeostatic regulation is set to different  levels, from molecular-subcellular to suprapersonal or social, through the  global consideration of the individual as a whole . The study of isolated aspects of this systematic organization must give us, for  strength, a partial vision. Human functioning is always influenced by a  hierarchically organized activity of suprasystems and related subsystems.
Homestasis is correct.

Abiotic factors, like water, are critical to most food chains.
a. True
b. False

Answers

Yes True

An ecosystem involves both the biological (plants, animals, human beings) and non-biological (land, water, soil, and atmosphere) community which interacts as a system. More importantly, the living things are very dependent on the abiotic community since it cannot survive by itself. Every animal, plant and human needs the primary physiological needs of water, food and shelter provided by the abiotic system.   
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