Hich of the following causes the seasons?

revolution of moon around earth

tilt of earth's axis

rotation of earth on axis

distance from the sun

Explain how a plant obtains usable energy through the process of photosynthesis.

Siderophores are bacterial proteins that compete with the host's: a. iron-transport proteins. b. antibodies. c. red blood cells. d. white blood cells. e. receptors.

Which of the following statements are false? alleles are alternate forms for a specific hybrid genotype is the expression of a trait

Which biome has the highest energy budget and the greatest species diversity

Beside deoxyribonucleic acid, what else could DNA stand for?

With which atoms does carbon most frequently bond

What is a karyotype?

A scientist has been working for 15 years to develop a new type of plastic material, but she has not yet been successful. Which of the following best explains why her work is still a success?

Technology can have good and bad effects. What is a bad effect of spraying pesticides on crops

Can your body make antibodies for pathogens that you have never been in contact with