Which of the following statements describes holoplankton? A) various kinds of trees and shrubs that grow in saline coastal sediment habitats in the tropics and subtropics
B) the largest types of seaweeds belonging to the brown algae family that grow in shallow ocean waters
C) one of the two main types of zooplankton which are permanent members of the zooplankton family
D) microscopic organisms that drift in ocean and freshwater environments and perform photosynthesis

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.