Birds that fly have lightweight bones, some of which are hollow. how might this unique body structure beifit the bird?

The energy needs of a human population are not affected by

Explain how the concentration gradient affects the process of atp synthesis

Why can cancer in the lymph nodes (lymphoma) be particularly dangerous? a. the lymph node's ability to produce cancer-fighting lymphocytes would be compromised. b. the lymph node's ability to produce cancer-fighting lymph would be compromised. c. the lymph nodes produce lymph, which nourishes growing cancer cells. d. the lymph nodes produce chyle, which nourishes growing cancer cells.