All of the following are fossil fuels except
a. natural gas
b. coal
c. oil
d. wood

Of seawater increases with decrease in the temperature. therefore, the cold water sinks to the deeper layers at the bottom

Which statement describes an endocrine function rather than an exocrine function? a. salivary glands release saliva into the mouth. b. sweat glands release sweat onto the skin c. the pineal gland releases melatonin into the blood. d. esophageal glands release mucus into the esophagus.

The negative impacts of nonnative species generally outweigh the positive impacts