16. A "greenhouse gas" is one that absorbs infrared radiation (heat) and traps that heat in the atmosphere. The greenhouse
effect is a naturally occurring effect that is important to life on
the planet. Without this effect, the earth would be too cold for life
to exist.
How does an excess amount of CO2 in the air contribute to
Earth's warming? Use the diagram for reference.

The diagram shows a fossil of an ancient whale skull and a skull of a present-day whale. the ancient whale is extinct and is believed to be an ancestor of the present-day whale. what do these skulls most likely show that supports darwin’s theory of evolution? all populations can adapt and survive. only some organisms have a common ancestor. populations change slowly over time. populations rapidly become extinct.

The cluster of developing cells from conception until birth is called an

Give an example of a trait that is controlled by more than one gene.