Which of the following increases genetic variation by forming entirely new alleles? Natural selection
Genetic drift
Mutation
Gene flow

What is an endocrine function? (apex) a.esophageal glands release mucus into the esophagus b.salivary glands release saliva into mouth c.swear glands release sweat to the skin d.the pineal gland releases melatonin into the bloodstream

The idea of spontaneous generation was disproved by in a experiment involving jars of meat

When a person is exercising the body needs to deliver increased amounts of oxygen to the muscles which component of blood ensures that the muscles will receive it