The answer is D, a desert biome,
A because if they build a mall there the bear have no where to live and they would die out.
Answer:
blood can still return via the deep veins
Explanation:
The venous system at the leg is known for its complexity and highly branched nature. The superficial and deep veins, both branches and connects with each other at different points along their length
Answer:
Letter B is on the steepest slope.
Explanation:
A is not correct because letter A is on a position where the contour lines are not close to each other, suggesting that the slope is not mild.
B is correct because the spacing between the contour lines where the letter B is marked is very small, suggesting that the slope is very steep.
wC is not correct because just like with letter A, the contour lines are not close to each other, but are further away, suggesting that the slope is not steep but it is mild.
1. ryanodine (RyR) receptor
2. calcium (Ca2+) leaves the SR
The SR stores and regulates intracellular
calcium as its main function. When calcium activates ryanodine receptors, it activates the SR to release calcium it has stored.
