91影视

The ecosystem in which an area, such as temperate and tropical regions, whose vegetation is covered by grasses but does not support a forest is called grassland.

When water falls from the sky in the form of a drop and then falls onto the ground, it is called rainfall.

Thus, the rain does not consider at the trophic level.

Therefore, the given statement is false.

The effects of temperature on plants are shoot growth reduction, reduction in plant enzyme activity, and decrease in root growth.

Thus, the temperature is not the organisms that inhabit an ecosystem.

Therefore, the given statement is false.

The different nutrients found in the soil are magnesium, nitrogen, sulfur, potassium, and phosphorous.

Thus, the soil nutrients do not affect the population of organisms in an ecosystem.

Therefore, the given statement is false.

In agriculture, the feeding strategy in which animals search, select, and grasp the wild vegetation for consumption as food is called grazing.

Thus, the top-down control represents the higher organisms population like predators at the trophic level affecting population present at the lower trophic levels; population dynamics of plant species is influenced by higher trophic level.

Therefore, the given statement is true.