Place the phases of meiosis in order.

1. prophase 2

2. telophase 1

3. anaphase 1

4. metaphase 2

5. prophase 1

6. metaphase 1

7. anaphase 2

8. telophase 2

Ecologist have observed a sharp increase of sulfur dioxide in the air . what might be a possible consequence of excessive sulfur dioxide in the air ? a. acid rain b. ozone layer depletion c.ozone layer hole d.increase in sea levels

How many chromosomes does each human cell contain? a. 23 chromosomes b. 26 chromosomes c. 43 chromosomes d. 46 chromosomes

Coral have a symbiotic relationship with what in order to eat?