What would you call a species that first enters an environment in the early stages of succession?

A. A pioneer species

B. An alien species

C. An invasive species

D. An endangered species

What is the most important chemical property that causes a molecule to be described as an acid? a. Ability to accept protons b. Presence of a Hydrogen atom c. Ability to donate protons d. Absence of an Oxygen atom

A train travels 50 km/h south for 2 hours. Then the train travels north at 75 km/h for 5 hours. Where is the train now relative to its starting position?

Spirochetes have a twisting and flexing locomotion due to appendages called

What color of light does a green object absorb?

The process in which cells from two different parents unite to produce the first cell of a new organism is called?

Read the following statements that describe how information flows in the nervous system. What is the correct order in which they occur? 1) Response is carried to glands or muscles. 2) Information is gathered.

Sodium has the atomic number 11

What type of reaction happens when amino acids combine to form proteins and water is released?

НЬ ТА Ts A AA AS S AS | SS What are the chances that their offspring will have sickle cell anemia? 0% 25% 50% 100% O

Andesite has large crystals surrounded by fine-grained minerals. whcih term describes the texture of andesite?