A growth defect in cells

In the late Devonian era, the seas began to recede and the land became more fertile. These environmental changes resulted in the emergence of land-dwelling vertebrates.

The sun is the unlimited source for energy on the earth? T or F

Which is the following is responsible for the exchange of gases in a leaf

Fruit jelly is mostly juice, but it doesn't run all over the place even if you cut a piece and put it on a plate.

Intense uv light from the sun is lethal to living things. currently, some 99% of all incoming uv is blocked by the ozone layer which didn't develop until well after the first life-forms.

What best describes a gamete

In the alternation of generations life cycle the diploid zygote grows into a sporophyte plant through a process called

Which statement is true for both plant and animals cells? They have centrioles and cellulose. Animal cells are generally smaller than plant cells. They have mitochondria and chloroplasts. They have cell nuclei and vacuoles.

What's one main difference between prokaryotic and eukaryotic cells

Why dose secondary succession occur faster than primary succession?