Which statement describes the formation of galaxies?

A. They begin in nebulas.

B. Heat and gases contract.

C. Gravity causes stars to cluster.

D. Dust and gases contract.

What type of energy transformation takes place when carbon is circled during cellular respiration chemical energy to chemical energy chemical energy to electrical energy mechanical energy to chemical energy mechanical energy to mechanical energy

Cholera develops when the bacterial toxin

What are the three types of mines

What are three organisms that belong to euglenozoa?

1. Which of these is not classified as an organism? kidney tree? lizard protozoa 2. Which domain consists mainly of organisms made up of many cells? Archaea and eukarya Bacteria and eukarya Only eukarya Only bacteria

In what ways are index fossils and layers of volcanic ash found in ice cores similar?

The percentage of silt in silty clay loam is what? a. 60% to 70% b. 80% to 90% c. 90% to 100% d. 10% to 20%

Which of the following would cause an error in DNA replication? A. DNA ligase taking apart chunks of DNA B. Helicase making a replication fork C. DNA polymerase pairing new Cs with Gs D. DNA polymerase checking the DNA

Which of the following about Dalton's theory of matter is true? A Atoms of the same element have the same mass. B Compounds formed from two elements will not always have the same proportions. C Atoms cannot be divided into smaller parts.

What would cause a particular polygenic trait, like tall stature in humans, to become more frequent in a population over time?