Which structures produce a fluid to protect the body in the first line of defense? Select four options.

hair

stomach

mouth

eyes

skin

What is the color of a mineral in powdered form is the minerals?

What term describes the parents in a monohybrid cross? They are true-breeding plants. They carry a hidden allele. They differ in a single trait. They carry the dominant trait.

the order in which sedimentary rocks are formed

A group of the same kind of organisms that live in the same area at the same time

Describe the major contribution of Dalton's atomic theory to the understanding of atomic structure. A) Electrons can only be located in circular, concentric shells. B) Chemical elements are made up of identical units called atoms.

The human population began to increase noticeably around 10,000 years ago. what has been hypothesized as the reason for the population increase at that time?

Osmosis is a diffusion process that moves__ through the membrane from higher to lower concentration

Each type of mineral has a chemical composition that is

Are all insects arthrapods?

What is a pigment cells that change the color of an organism, allowing it to camouflage?