Answer:
The circulatory system of the crayfish is an open system where the blood is contained in vessels for only part of the system. The heart is located in a pericardial sinus located in the upper part of the thorax (a sinus is a sac or cavity). The heart pumps the blood into the arteries.
Explanation:
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Answer: map
Explanation: I say its map because a map represents the entire earth
Mostly the sun. Producers use energy from sunlight to make energy combining Carbon dioxide and water to form organic matter
Joint Firs are the plants in which division can live as long as 1500 to 2000 years.
