D
Because most air pollution is caused by the burning of fossil fuels burned in the home
Im going to guess either c or d
Explanation:
a thermocline is an abrupt temperature gradient in a body of water such as a lake, marked by a layer above and below which the water is at different temperatures.
hope this is helpful
- developed from two separate eggs. Identical twins come from one zygote that splits into two embryos, while fraternal twins come from two separate eggs that are fertilized.
