lichen growing on newly formed lava beds is an example of

a. a primary ecosystem

b. evolutionary succession

c. primary succession

d. secondary succession

Which process is involved in growing crops? irrigation transportation recreation condensation

What is hydroelectric power produced by?

Which is a genetic engineering advancement directly related to a career in biotechnology? 1) improving solar energy collection 2) transporting textiles at higher rates 3)creating crop foods that resist insect pests 4)repairing historical sites with quality materials