1. earth's ozone layer is responsible for absorbing from the sun
2. changes in the composition of the atmosphere have caused gradual changes in earth's
throughout history, causing changes in plant and animal life that contributed to mass
extinctions
3. chemical chlorofluorocarbons (cfcs) have been banned and replaced with _ which
destroy about 1% of the ozone that cfcs do.
4. naturally occurring volcanic eruptions can produce large amounts of gases that contain sulfur.
these gases accumulate in the atmosphere in the same way as man-made
5. greenhouse gases absorb infrared radiation and trap it as
respond to the following based on your reading.
6. briefly describe which environmental factors are responsible for the greenhouse effect.
responsere

UV light

climate

hydrofluorocarbons or HFCs

pollutants

heat

As sunlight falls on Earth's surface, it heats up the surface. Infrared light is emitted from the surface and is absorbed in the atmosphere, where it is converted to heat. This heat remains trapped in the atmosphere, causing the temperature near the surface to increase.

Explanation:

these are all correct

UV light

climate

hydrofluorocarbons or HFCs

pollutants

heat

As sunlight falls on Earth's surface, it heats up the surface. Infrared light is emitted from the surface and is absorbed in the atmosphere, where it is converted to heat. This heat remains trapped in the atmosphere, causing the temperature near the surface to increase.

Explanation:

cell differentiation  is how generic embryonic  cells  become specialized  cells. this occurs  through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a  cell  functions.

explanation:

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide