This table shows how the levels of classification have changed with each major scientist.

Which number belongs in the space labeled X?

5

7

8

10

The health, management and conservation of biodiversity, is a challenge facing ecosystems worldwide. the major factors that affect the health and function of the great barrier reef are climate change and pollution. which question investigates the effects of a biotic factor on the reef ecosystem?

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots