How do root hairs to improve water uptake in a plants root system?

8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.

Iwanna go do something with my ideas? ?

Has anyone taken the genetics unit test in connexus? not looking for answers, just a little bit what to expect and some with studying.