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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Cytoplasmic uses actin and myosin for the movement of the cytosol which causes the organelles to move inside the cell.
It seems to me that the graph indicates that the number of species that have become extinct <span> has increased with increasing human population. I consider the first option as a correct one because lines represented on the graph both go upwards through the same period of time and also they coincide which means they both increased.
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Damage to the frontal lobe of the braineventually causes problems with intelligence, judgment, and behaviour. Damage to the temporal lobe affectsmemory. And damage to the parietallobe affects language. Alzheimer's is themost common form of mental decline, or dementia, in older adults.
Answer:
They should not continue with research of stem cells
Explanation:
