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_______________ is the study of the interactions between organisms and their environments, at individual, populations, community, and ecosystem level.

______________ are organisms that live in or on other organism (the host) and cause damage to the host.

____________ is a type of symmetry were the body can be divided along multiple angles into equal halves, similar to a pie.

When fertilizers drain into aquatic ecosystems it can result in excess algae and bacterial growth.  The growth of these organisms results in hypoxia, which is the removal of ______________ from the water.

________________ are the physical and behavioral characteristics that allow for an organism to be more successful in their environment.

Vascular seed plants are the dominant plant group on the planet today.  What adaptation do they have that other groups do not, and is most likely the reason for their success?

The first step of the ____________ cycle involves bacteria that fix the gas from the atmosphere.

This important aspect of life history measures material and energetic contribution that an individual will make to its offspring.

________________ is the change in allele frequencies of a population over time.

Which is not a way humans have greatly increased our carrying capacity?