4. Thinning ozone levels may cause: A. Acceleration of photosynthesis in plants
B. Increased exposure to ultraviolet radiation on Earth
O C. Alien domination
O D. Disruption of radio signals from Mars

Which statement best describes a keystone species? o a. it has littlelmenetic variation. it has an extremely high population. 0 b. 0 c. it remains unaffected by all environmental changes. od. it has a strong influence on the ecosystem. 0 e. it's the first species to populate a new ecosystem.

Use the drop-down menu to match the following definitions to the corresponding terms. the total variety of organisms that live in the biosphere a group of organisms that breed and produce offspring that can breed all of the biotic and abiotic factors in an area

When listening the levels of orginization in orginisims from the smallest to most complex , which level is just below organs in complexity