Which is not a density-dependent factor limiting population growth? a) predators b) drought c) food availability d) living space

The correct answer is B. Drought

Explanation:

In biology, density-dependent factors are factors that directly depend on the population of organisms, this includes factors such as predators, diseases, resources availability or space that affect the size of a population by limiting it. For example, more organisms lead to little food availability and this leads to a decline in the number of organisms limiting population growth. On the other hand, factors that are not density-dependent are not related to the size of a population but can affect populations of any size. Considering this, the one that is not a density-dependent factor is drought as this is a natural disaster that can affect any population and is not related to the size of populations.

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg 

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.