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Makovka662 [10]
3 years ago
14

HIV weakens the immune system by killing

Biology
1 answer:
san4es73 [151]3 years ago
4 0
T-cells.These<span> are cells that help the immune system fight against disease and infections in the body. </span>
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Comparing the body structures of organisms to find evidence of a shared evolutionary history is called ________.
Sergio [31]

Answer:

The correct answer will be option-C

Explanation:

Comparative anatomy is the branch of study which studies anatomy or skeletal structure of the different species and comparing them to study the relationship between them.

The comparative anatomy is studied to study the evolutionary relationship between the different species which acts as evidence of the evolution. The study has distinguished the skeletal structure as homologous structures or analogous structure.

The correct answer will be option-C.

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3 years ago
Imported plants and animals in Hawaii have
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When a non-native or a foreign plant or animal is introduced in a new area, it affects the survival of the native animals that dwell there. The non-native plant or animal will compete with the native species for nutrients, water, space, food and shelter. Since the non-native animals will lack natural predators in the new habitat, they'll thrive in number. This uncontrolled competition of the non-native species with the native species will eventually leading to the death of the native species.

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Look at the phylogenetic tree. Do robber crabs have more in common with humans or with sponges? What conclusion can you reach ab
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Answer:

Robber crabs have more in common with humans than sponges.

Explanation:

Robber crabs have more in common with humans than sponges because sponges don't have tissues. Crabs and humans have specialised tissue.

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3 years ago
The gastric phase of gastric secretion is triggered by the:
Anvisha [2.4K]

Answer:

The entry of food into the stomach.

Explanation:

Gastric secretion is triggered by the act of eating which is called as reflex phase and the entry of food into the stomach called a gastric phase. The entry of the food particles into the small intestine also helps to control the secretion of gastric called an intestinal phase.

The secreted fluid in the small intestine contains some ions, acids, etc such as pepsinogen, intrinsic factor, bicarbonate, hydrochloric acid, and mucus. The reflex phase or cephalic phase helps to stimulate parasympathetic neurons that release acetylcholine chemical, then it produces the higher secretion of gastric juice.

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