What is a frozen fossil?

Is there such thing as heterozygous recessive?

What is one function of the pyloric sphincter? A. Controls the release of pancreatic secretions into the small intenstine B. Prevents stomach contents from backing up into the esophagus C.

Some biological hazards (such as bacteria, viruses, parasites, and fungi) are undetectable by sight, smell or taste and can potentially cause an illness. What are these biological hazards called?

What is eutrophication? What can speed it up?

A real life examples of how man-made pollution affected a real ecosystem, its abiotic (e. g. temperature, water quality, etc.) its biotic factors (e. g. species extinction), or its habitat?

If an organism used glycolysis (Embden-Meyerhof-Parnas pathway) but were unable to use fermentation or an electron transport chain, what problem would develop?

How do rivers and stream differ from lakes and ponds

The process of dna transfection is always 100% successful. True or false?

A concept which suggests that a historical event affects a cohort differently than it affects subsequent cohorts because of the life phase in which it occurred is called: A. historical effectsB. cohort effectsC. aging effectsD.

What do conservation biologists who adopt the small-population approach study?