HELP. humans have been burning fossil fuels rapidly for the past 250 years. As a result, the amount of atmospheric CO2 has increased by about ___% since the year 1800.

A) 20

B) 40

C) 60

D) 80

The tubes transporting minerals and water upward are called ?

Cloning an individual usually produces orangisms that (1) contain dangerous mutations (2) contain identical genes (3) are identical in appearance and behavior (4) produce enzymes different from the parent

Identify the product of genetic engineering.