7. What is the main cause of the increase in floating algae in the pond? Select the best answer. a. The use of fertilizer washing into the pond
b. The warm summer weather
C. The decreased amount of turtles and fish.
d. None of the above.

the warm summer weather maybe

The correct statement is monarchs have a way of discouraging bird predation that does not involve hiding.

Explanation:

One of the discouraging element for the prey of monarchs is there bright color. The butterflies are easily witnessed by its prey, however, the prey still shows no interest in eating them. This is because the bright color of the species makes them uninteresting, or even it might demonstrate a signal to the bird that some kind of threat is associated with the feeding of monarchs.