Answer:
I and II
Explanation:
I. irrigation of cropland & II. harvest of biomass for energy
Answer:
In disproving the theory of spontaneous generation
Explanation:
The two structures that limit transpiration are known as stomata and guard cells.
For evolution to occur:
There must be genetic variation in a population. This provides variation on which natural selection can act. Then natural selection can act by selecting those species which are better adapted to the environmental conditions. Over time those animals that are best suited to the environment only will survive and reproduce. Those organisms successful genes will be preserved and eventually the gene frequency in the population will change, changing the overall characteristics of a population. This is how evolution occurs.
Jobs. Like a snow blowing company. They would not have that in Puerto Rico. But Canada might. Because they have a different enviornment.
