Which area shows the climax community of secondary succession?

Results of air pollution

Arrange the phases in the life cycle of the Sun in order from the birth of the Sun to the time in the far distant future when the Sun has cooled.

The disappearing of bees and other pollinating insects is often used as a sign that an ecosystem is becoming unstable. Why are bees an important indicator of ecosystem health?

How does an inroduction species affect native species and the economy?

Which process is responsible for causing menstruation?

What season has leaves turning red and gold

What are some possible consequences if transgenic salmon escape from their pens into the ocean population? How might transgenic salmon affect the evolution of other salmon populations?

When two species occupy the same niche in an ecosystem, the result of the competition is that one species will either have to move to a different environment, or it will die out.

The solar system formed from the A. collapse of an interstellar cloud. B. explosion of an interstellar sun C. grouping together of asteroids D. collision of two massive stars

Why can we treat flu symptoms with antibiotics, but not the flu itself? What would be affective against the flu?