Why are trophic levels often displayed as a pyramid?
it is just an attractive way to show them.
it shows how there are many more of the lower levels than the higher ones.
it shows how large the animals are in the levels.
both b & c are correct.

Is genetic diversity the same as genetic variation?

The us council on environmental quality, the world wildlife fund of the united states, the ecological society of america, the smithsonian institution, and the international union for the conservation of nature have proposed four principles of wildlife conservation. which of the following does not apply to wildlife conservation? a) continuous monitoring, analysis, and assessment b) ecosystem maintenance that includes wildlife c) a plan encompassing entire communities of organisms and all renewable resources d) a continued interest in harvesting populations for sport

What are the four stages of cell signaling?