Which factor activates a convection current, starting the flow of a fluid?

cold temperatures at the north pole

iron-rich rocks in the mantle

heated liquids at Earth's surface

temperature differences in the mantle

The explanation of the solar system formed from the huge cloud of dust and gasses called

Glucose is the main source of cell energy, but any glucose that can't be used immediately is stored for future use as A. galactose. B. fat. C. glycogen. D. carbohydrates.

Issa the standard recommended intake of fruits and vegetables is

Viruses contain dna or rna, but lack genes necessary for metabolism and reproduction. why are viruses not considered to be alive?

The smaller vessels that carry blood away from the heart and connect the arteries to the capillaries are called the: A. venules. B. arterioles. C. vena cavae. D. capillary arteries.

Which natural process is the main cause of the ocean currents shown?

DNA is made of repeating units called

Are hermit crabs unicellular or multicellular

Using environmental resources in a way that does not cause long-term environmental harm is like A. spending only as much money as you earn. B. borrowing money that you cannot pay back for a long time. C. printing more money when you need it. D.

Why is molarity a better way of expressing concentration compared to molarity