Effects of Cycles on Ecosystems Answers

Fluctuations in the phosphorus cycle in aquatic ecosystems _______.

Populations are positively and negatively affected by a variety of biotic and abiotic factors, including the cycles of matter. Every autumn between September and November, Canadian geese will migrate from their breeding grounds in Canada to warmer Southern locations. However, in the spring between February and March, the geese will return to Canada. Photo by Peter McDermott Which abiotic factor would likely have the greatest effect on Canadian geese migration?

The desert relies on precipitation from weather patterns, while the rainforest can create its own precipitation.

Where do animals obtain carbon?

Fertilizer runoff has a negative impact on aquatic ecosystems because _______.

Plants in the rainforest _______.

Phosphorus plays an important role within the structures of the body. Which of the following structures is phosphorus found in?

Phosphorus is contained in _______.

A large portion of precipitation in the rainforest occurs as a result of _______.

Carbon is found only in living organisms.

Cycles are essential to all living organisms.

Trees obtain carbon from _______.

One reason that rainforests have more precipitation than deserts is _______.

What is desertification?

The cycling of carbon throughout the environment is critical to ensuring the survival of all organisms. Suppose a mountain lion kills a deer in the forest. Photo by US Department of Agriculture What would likely happen first to the carbon in the deer carcass as it lies on the forest floor after the mountain lion has finished feeding on it?

How is carbon reintroduced into the atmosphere?