Which of the following is the reason the cell theory is a theory?

a. a theory cant be proven

b. a law cannot be proven

c. a law has been disproven

d. a theory has not been disproven

How do cells move potassium ions against a concentration gradient, from a lower concentration to a higher one

Why do we have controversy in society?

The crust below the oceans is made of sand and salt sediment mostly granite made of metamorphic rock and granite basalt and a layer of salt sediment

We suspect the original ocean was at least somewhat salty because the marine organism kinds that exist today were able to survive the Flood.

The pharynx is the structure in the body that serves as a pathway of both air and food. How does the body make sure that food does not get into the lungs? The salivary glands secrete enzymes that pull food out of the air pathway.

A eukaryotic decomposer with a cell wall made of chitin is associated with which of the following Eubacteria Protista Archaebactria Fungi

Naturally occurring compounds in the earth are called what?

Tenho uma dúvida sobre uma coisa, por favor me expliquem para onde vai a água da chuva que cai sobre a areia, já que dificilmente vemos se formarem poças e por que vão pra esse lugar?

How are iconic bonds and van der waals forces different?

What is the production of a phenotype that is between 2 homozygus parents?