Answer:
A releaser is a stimulus from one animal to another, which causes a particular response.
Explanation:
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Answer: The answer is D mate
Explanation:
Answer:
All the arteries except pulmonary artery carry pure blood..it is so because blood flows with a high pressure and speed And because Arteries are situated deeper under the skin have thick-walled with Narrow lumen(cavity) and pulmonary artery carries deoxygenated blood i.e without oxygen..
Explanation:
lumen means Empty space within an object(solid)
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when a plant takes in sunlight to make glucose