What effect would an increase in duckweed have on a pond ecosystem ? A. The duck population would decrease due to a lower food supply

B. The fish population would increase due to an increased food supply

C. The underwater plant population would decrease due to decreased sunlight

d. The algae population would increase due to higher levels of oxygen in the water.

Lucia is walking barefoot in her yard. she accidentally steps on a nail. how will her nervous system work to generate a reaction? arrange the eventschronologically.

The image shows the evolution of a species of fish. a few fish from a population developed different social behaviors and evolved into different species. two fish according to the image, the fish underwent . the new species of fish had mating seasons that were different from that of the original fish. because of the differences in mating seasons, the fish underwent reproductive isolation. this mode of isolation would be .

About how many years does it take for one cycle of surface water to become deep water and then surface water again in the oceans? 101001,000