Need number 18 answered

the cost of mining is extremely low compared to the money earned from mining, creating income to improve the environment.

some inherited genetic mutations can be good for the offspring, so the answer is different genetic mutations cause many forms of cancer.

it's a.true. i'm kind of smart.

producers within ecosystems are essential as they are at the base of the food chain. plants are examples of producers. they use the process of photosynthesis to capture light energy and use it to convert simple inorganic substances (carbon dioxide and water) into organic substances (glucose).