Which of the following would most likely cause increases in predator population within an ecosystem? A. a period of drought

B. a fungal infection of producers

C. fewer herbivores

D. less competition

Are the earth's ocean floor and continents the same age geologically? why or why not?

Which of these statements is false? a. others may notice a problem with a relationship before the people involved. b. the first sign of a problem with a relationship is a feeling of anger. c. damaged relationships can be repaired. d. even good relationships can be damaged.

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm