Which period is known as the Age of Fishes?

A. Mississippian

B. Devonian

C. Permian

D. Jurassic

Identify which blood vessel drains blood from the head and shoulder region back to the heart

As one organism eats another toxins can be spread throughout the food chain true or false

A solution that has a pH of 1 is considered to be which of the following? a. Abnormal b. Acidic c. Alkaline d. Neutral

The number of possible genetically different gametes for an organism equals 2n where n is the number of chromosomes. If an organism has four pairs of chromosomes how many diffrent gametes can it produce? A. 16 B. 4 C. 8 D. 32

What would happen to a cell if too many substances escape from the inside of the cell?

What are the negative consequences of improper disposal of electronic waste?

Poliomyelitis is caused by a virus that spreads easily in human populations. most people with polio infections show no symptoms of disease.

What is the probability that the first offspring from the cross listed below will show the dominant phenotype for all loci? (type as a decimal and round to 5 decimal places) a. AA bb b. Dd ee x c. Aa d. BB dd e. Ee

Student A told Student B that his ears are the most lateral structures on his head. Student B corrected Student A and said that his ears are actually bilateral structures. Which student is correct, and why

These are harmful greenhouse gases that can destroy good ozone and were once found in hairsprays, refrigerators, and air conditioners. Question 4 options: chloroflorocarbons carbon dioxide ozone methane