In humans red blood cells are primarily produced in the red marrow. to which body system does red marrow belong? a. integumentary system b. circulatory system c. muscular system d. skeletal system

Option D

Explanation:

Bone marrow is an integral part of bones and hence it is a part of skeletal system. It is of two types – a) Red bone marrow and b) yellow bone marrow

a)Red bone marrow which is responsible for producing red and white blood cells

b)Yellow bone marrow which is also responsible for producing white blood cells  

The red marrows are mainly found in bones like  

a)Breast bone

b)Rib bones

c)Skull bones

d)Hip bone  

e)At the femur and humerus ends of long bones  

Hence, option D is correct

the correct answer would be 6 feet.

if the hares very faster than they are now, and thus the lynx's hunting success rate drops because it will be harder to catch them, the rate that will change will be the pray-rate. the pray-rate will change because more hares will be able to survive, thus more individuals for reproduction, so the end result will be increasing population of hares.

the predator-rate will remain pretty much the same because there will be more than enough pray, but the hunting success rate is stagnant.