L 4.5.2 Test (CST): Ecology Question 14 of 25
Which phrase describes a keystone species?
A. The species that uses the most resources in an area
B. A species that preys on all the other species in a community
C. The first species to colonize an area
O O
D. A species that is crucial to the health of a commun
SUBMIT

sand 60

clay 10

silt 30

sandy loam should be dominated by the sand. as the amount of sand increased, the amount of slit needed to anchor the plants' roots to the sand will also be increased. even though the amount is very little, 10% part of clay is still necessary for proper oxidation.

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.