What is the age of the oldest rock that has been found and dated?

A) 3 billion years

B) 3.5 billion years

C) 4 billion years

D) 4.5 billion years

Which group of algae is responsible for formation of kelp beds along the North American coasts? A) Brown algae B) Green algae C) Red algae

What lung values changed (from those of the normal patient) in the spirogram when the patient with emphysema was selected?

1. How can humans practice sustainability when using resources? O A. Use agricultural methods that produce an excess of food and cause soil degradation. O B. Use make non-renewable resources than renewable resources. O C.

The accumulation of mutations can drive the aging process.

How does the energy in each trophic level of an energy pyramid compare to the energy in the preceding level

What part of a red blood cell gives it the red color? a. platelet b. trachea c. hemoglobin d. capillary

When is acetyl CoA produced?

Identify two characteristics of forests that develop when fires are suppressed, and explain why the practice of fire suppression does not reduce, but actually increases, the risk of intense and extensive forest fires.

What contains DNA, a control center, has a membrane, and found in eukaryote cells?

Ice wedging is an example of which type of weathering? A) Chemical Weathering B) Surface Weathering C) Mechanical Weathering D) none of the above (It's C)