What is the difference between a primary consumer and a secondary consumer?

Which organism would be most likely to be able to survive rapid global climate change?

In the island biogeography model, species richness is a balance between

When describing the biomass difference between an acorn and an oak tree, it is most accurate to describe

A simple aquatic food web has phytoplankton, zooplankton, shrimp, and redfish. The productivity values are 200 g/m2for phytoplankton, 40 g/ m2 for zooplankton, 4 g/ m2 for shrimp and 0.5 g/ m2 for redfish. What is the trophic level transfer efficiency from zooplankton to shrimp?

Imagine Community 1: 5 species, one dominant species (e.g., 70 individuals), others rare (e.g., 5-10 each). Community 2: 5 species, each with roughly equal abundance (e.g., 20 individuals each).

A key exception to the Species-Productivity Hypothesis is:

After a volcanic eruption, the colonization of the area that was covered by the lava from the eruption is best described as:

What concepts enable two or more species with similar niches to coexist in a community? Select all that apply.

You find some rather strange plants in your backyard. They consist only of thin, pale yellow stems that are wrapped around other species of plants growing nearby. You experiment by unwrapping some of the strange yellow plants and planting half of them alone in pots of soil and half in pots with other plants from your yard. You water and fertilize both sets of pots, but after a few weeks you find that the yellow plants that were potted alone have died, while those potted with other plants are thriving. What term would you use to describe the strange yellow plants?