What do astronomers use to calculate the age of the universe? Select three options.

dark energy

the age of rocks on Earth

the age of the oldest stars

patterns of background radiation

how fast distant galaxies are moving away from us

What is a negative consequence of a mandatory quarantine

A metabolically important difference between proteins and carbohydrates and fats is that: a. proteins contain carbon whereas carbohydrates and fats do not b. proteins contain a lot more energy per gram than both carbohydrates and fats c.

How does cyanide affect cellular respiration?

2. True or false? The Atlantic Ocean is the biggest ocean on Earth.

Gap 1 Phase in a sentence

What does action force mean

Which cell organelle synthesizes phospholipids and steroids

Margot is pregnant with her first child, and she is deliriously happy! She and her husband have some tests taken, but before the doctor can come in and review the results, Jim sneaks a peek at the file with the test results.

How do cancer grows and spreads

Which statement best illustrates the concept of the interrelationship of living things with the physical environment, as found in the definition of ecology? A) Hawks and eagles often compete with each other. B) White-tailed deer shed their antlers.