Which body of water is most likely to be a marine ecosystem?

A. Pond

B. Estuary

C. Lake

D. River

An unknown white powder is tested by an antibody based detection system. The test does not indicate the presence of anthrax, yet the sample did contain B. anthracis spores. This is an example of: A. Sampling error B. A false positive C.

What organelle in the paramecium prevents the accumulation of excess water?

It is important that classification principles be standardized in order for all scientists to follow the same set of rules. An example of this is A) the use of Latin. B) the adherence to Medieval categories.

What is the difference between a trait that has multiple alleles and a trait that is controlled by multiple genes? Give an example of each.

The destruction of salt marshes will directly harm each organism except

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