Which material found in the digestive system aids digestion and also kills pathogens?

2. Most of the water on Earth can be found as

1. The fog on the mirror is caused by which change of state? Melting Freezing Condensation Vaporization 2. Using the answer you chose in question #1, explain how the change of state is occuring.

Results in new species is what type of natural selection

Look at the diagram below. Phosphate Base Sugar What kind of molecule is represented in the diagram? O A. A fatty acid O B. A nucleotide O C. A lipid OD. A carbohydrate

What reaction takes place in the thylakoid

Which statement describes an operon? heritable changes in gene expression that occur without altering the DNA sequence the processing of exons in mRNA that results in a single gene coding for multiple proteins a gene cluster controlled by a single

Which type of reproduction, sexual or asexual, is best suited for organisms that live in a place where environmental conditions are stable

Imagine a person is in a car accident and suffers a sever physical injury. The person receives an injury where a blood vessel is cut or otherwise damaged and blood is squirting or gushing out of the wound.

An animal maintains its fluid balance by regulating the gain and loss of water. This maintenance is an example of

What is the most population city?