The sun's energy and composition is provided by which of the following?

A. the burning of fossils fuels within the sun

B. solar power that produces electricity in the sun

C. the sun's magnetic field

D. the fusion of hydrogen into helium

How do the cells get all of the parts that make up DNA and RNA?

Explain how the interconnectedness of living and nonliving things is shown in the biogeochemical cycles.

which of the following enzymes catalyzes the linkage together of rna nucleotides to form rna? robosome, polymerase, ligase reverse transcriptase

Molly likes to eat oranges year round, but her friends tell her that she is not living sustainably by doing that.

Describe how an allosteric enzyme works.

Identify the components of seawater

Glycogen belongs in the class of molecules known as

1. The concentration of sugar is higher inside a cell than outside the cell. The concentration of water inside the cell is lower than it is outside. Sugar cannot pass through the cell membrane.

Which describes the variable that is changed to test the prediction? A) dependent B) experimental C) control D) independent

What is used to classify the layers of the atmosphere? Question 1 options: Differences among temperature altitude, and weather Differences among temperature, air pressure, and density Differences among altitude, wind speed, and weather How far away