Primary succession occurs when pioneer species move into an area that has no plants. Which organisms are common pioneer species?
A.
Conifer trees and tall grasses with roots that loosen the soil
B.
Mosses and lichens that can grow on rocky surfaces
C.
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

Question 4 using myplate's daily food plant for 2000 kilocalories as a reference, the servings from the protein foods group in this menu are a. adequate overall, and consistent with the dietary guidelines 2010 recommendations. b. short 2 ounce equivalents. c. inadequate in terms of the recommendations for a 2000 kcal diet. d. adequate overall, but inconsistent with the dietary guidelines 2010 recommendations.

What are the doorways into and out of cells, attached to the membrane, and built in the rough er.

Which of the following describes a boom period? a. as one population increases, another population decreases. b. as one population increases, the other population also increases. c. as one population decreases, another population increases. d. as one population decreases, another population also decreases