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Solnce55 [7]
3 years ago
7

Natural selection is defined as

Biology
2 answers:
mr Goodwill [35]3 years ago
7 0
C. The changes in the characteristics within a population that lead to survival.

It is C because with natural selection it is random.
mojhsa [17]3 years ago
7 0

Answer:

Answer: C

Explanation:

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Does the Fox get all of the energy from the oak tree during photosynthesis
erastovalidia [21]

Answer:

I think yes but I'm not sure.

Explanation:

3 0
3 years ago
What statement does NOT pertain to the cephalic phase of gastric secretion? (It controls the rate at which chyme enters the smal
egoroff_w [7]

Answer:

It controls the rate at which chyme enters the small intestine

Explanation:

Cephalic phase is one of the phase of gastric secretion (other two are gastric phase and intestinal phase) that begins even before food enters the oral cavity. Thinking of food stimulates the release of gastric juice via  parasympathetic nervous system). Food that enters the stomach also stimulates the secretion of gastric juice by parietal cells. Partially digested food directly activates  G cells (Enteroendocrine cells) to secrete gastrin which also stimulates the release of gastric juice.

8 0
3 years ago
All of the following are TRUE regarding the fight-or-flight reaction, EXCEPTA.it is a relatively new human adaptation.B.it enabl
Assoli18 [71]

Answer: A.it is a relatively new human adaptation.

Explanation:

Fight or flight response is a response shown by a human or animal body towards acute stress. It is a physiological reaction that occurs in response to the perceived attack, survival threat and attack. The animals or humans react to threats by the hormonal secretion from sympathetic nervous system. This prepared animals for fighting. The hormonal secretions like catecholamines, epinephrine and nonepinephrine helps in generation of response. Neurotransmitters dopamine, estrogen, testosteron e and cortisol affects how organisms react to the stress.

Fight-or-flight reaction is not a relatively new human adaptation but it is evolved as a survival mechanism which was also present in primitive human beings and mammals and helped them to react in the life-threatening situations.

8 0
3 years ago
Glycolysis takes place in the ________, and the krebs cycle takes place in the ________
Fynjy0 [20]

Glycolysis takes place in the cytoplasm, and the Krebs cycle takes place in the mitochondria of the cell.

Glycolysis is an anaerobic process. During glycolysis, partial oxidation of glucose occurs, which produces two molecules of pyruvic acid.

Krebs cycle occurs in the mitochondrial matrix.  It is an aerobic process which produces Carbon dioxide after complete oxidation of pyruvic acid that is made up during glycolysis.

The pyruvate formed by the reduction of glucose in the glycolysis is broken down into acetyl-CoA which then enters the Krebs cycle and condenses with oxaloacetate to form citrate. One pyruvate molecules yields 15 ATP and therefore, two pyruvate molecules lead to the production of 30 ATP.

To learn more about Glycolysis here

brainly.com/question/14076989

#SPJ4

4 0
1 year ago
Which of the following steps in the nitrogen cycle takes place after animals eat plants?
timofeeve [1]

Answer:

A. Decaying waste returns nitrogen to the soil.

Explanation:

Hopefully this helps

4 0
3 years ago
Read 2 more answers
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