When did humans begin to use fossil fuels as their primary source of energy?
renaissance
ancient times
middle ages
industrial revolution

How does deforestation affect the water cycle? a. it increases the amount of runoff b. it increases the amount of percolation c. it increases the amount of transpiration d. it increases the amount of precipitationa it increases the amount of runoff

What best describes the structure of the declaration of independence?

When mendel crossed a true-breeding short plant with a true-breeding tall plant all the offspring were tall. which term describes the gene for tallnes?