This energy source also provides us with products such as ink, eyeglasses, and tires.

O coal

O crude oil

O natural gas

O methane

John was told that the tumor in his brain is malignant. this means that the tumor is

Many children were paralyzed by polio in the 1950s. Today, polio has been reduced by 99 percent. Which statement best explains how this disease has been almost eradicated?

A biology class is studying the effect of temperature on the amount of growth of duckweed in an aquarium.

Which work against each other to maintain homeostasis?

The pigmented organelle associated with photosynthesis is the

The movement of air into and out of the lungs is called

Plants obtain phosphorous from: the atmosphere the soil animals

Ehrenreich provides fairly extensive commentary in footnotes. what is the effect of this strategy? in the footnotes, is her tone different from the one used in the body of the piece? explain

What is the composition and approximate thickness of the mantle?

In 2010, a new type of life form was found in California's Lake Mono. The microbe found has a variation in the structure of its DNA. DNA is known to consist of nucleotides.