Greenhouse climate on earth was associated with relatively high atmospheric levels of which gas?

a. nitrogen

b. water vapor

c. oxygen

d. carbon dioxide

What is the largest type of plant in the world that does not have a wooden stem?

What is a protein called if it loses its shape?

Which of the following is NOT correct about the cell membrane? a encloses the contents of the cell b is solid and unchanging c is selectively permeable d allows materials to enter and leave cell

From which of the following layers of the sun is light energy radiated into space? Convective zone Inner core Photosphere Radiative zone

Which will occur if humans continue to overload water systems with excess water?

Describe the factor that affect blood pressure

What is true about one strand of DNA? Question 3 options: It contains many proteins. It contains many alleles. It contains many chromosomes. It contains many genes.

Write a paragraph to explain the steps of metamorphasis using the words adult, egg, larva, body parts, grow, rearange, and life cycle

The process of creating a current in a circuit by changeing a magnetic field

Explain why the fact that invasive species did not co-evolve with the native species unbalances an ecosystem.