Which is not an example of an internal response to stimuli?
a.
a deer sees a wolf and runs away.
b.
a bean seedling bends towards the sun.
c.
a rabbit feels thirsty and drinks water.
d.
the sun shines over an entire field of sunflowers.

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.