Primary succession occurs when pioneer species move into an area that has no plants. Which organisms are common pioneer species? А
Conifer trees and tall grasses with roots that loosen the soil
B
Mosses and lichens that can grow on rocky surfaces
С
Grasses and weeds that arrive as seeds carried by the wind and then germinate in rich soil
D
Vines and shrubs that help prevent the erosion of shallow soil

Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings? a. the wings are analogous structures that evolved differently and do not have a similar internal structure. b. the wings are homologous structures that evolved differently and do not have a similar internal structure. c. wings of birds are vestigial structures, but the wing structures of bats are not vestigial. d. wings of bats are vestigial structures, but the wing structures of birds are not vestigial

Explain what happens at the saturation point when adding salt to water at room temperature.

Apush or pull that moves or changes and object when to objects touch