Blood cells are made in which system? a. muscular system b. skeletal system c. circulatory system d. digestive system

Blood cells are made in the skeletal system. Although it may seem to make more sense for the blood cells to multiply within the blood stream itself, there are actually organs that specialize in the formation of blood cells, primarily the bone marrow found in numerous bones throughout the body.

The answer is skeletal system but white blood cells and platelets are made in the skeletal system

That is true tge cactus as a structural adaptation to its envirinment has it leaves reduced to spines. but this doesnt mean it cant produce food it produces food because of the presence of chlorophyll in its stem

Humans can affect weathering and erosion in several ways.  humans cause  increases in acid rain and pollution, which increase the amount of  weathering  agents in the air and water, and then on land.for an easy answer: 1) acid rain2) pollution