Answer:
280
Explanation:
Each line is 20 so count till the A line and you get 280
A typical example is environment science. Environmental science is a field that deals with the study of interaction between human systems and natural systems. Natural systems involve the earth itself and life. ... Sciences used in environmental science include geography, zoology, physics, ecology, oceanology, and geology.
Answer:
B. It allows for genetic variation.
Explanation:
As prophase progresses, homologous chromosomes come to lie side by side and become intertwined rather like a zipper. This process is called synapsis. During synapsis, homologous chromosomes exchange genetic material between one another which allows for genetic variation. This exchange is called crossing over.
Carbon dioxide and sunlight I think
