Which phrases describe both lakes and ponds? Check all that apply. a. contain still, standing fresh water
b. have no plants growing at the bottom
c. formed by rainfall, melted snow and ice, or runoff
d. formed by lava or mud blocking a river
e. created by building a dam on a river
f. are shallow enough that sunlight reaches the bottom

Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.

What do nitrifying bacteria convert

Babies with very low or very high birth weight are less likely to survive. observe a graph of the data.