Which of the following is considered a second-line defense?

A. circuatory

B. digestive

C. nervous

D. respitory

There are four types of biomes. true or false

Atoms are the most basic unit of matter. Two or more atoms from the same or different elements can combine to form molecules. A. cells → organs → tissues → organ systems → organism B. cells → tissues → organs → organ systems → organism C.

Which organism in the alpine booms was once nearly extinct

What is genetic modified food

You observe the mycelium of a fungus under a microscope and notice no distinct cell walls but several cell nuclei. Is the mycelium composed of septate hyphae or nonseptate hyphae?

Drake is comparing time people spend playing games on Xbox versus Playstation. In his study, individuals ages 10 - 15 are given Xbox's and individuals ages 16 - 25 are given Playstations.

How do scientists obtain knowledge about the world? Check all that apply.

What would the temperature of the surface be if the Earth did not have an atmosphere?

How would the lack of water affect cellular respiration?

Different types of normal tissues in the human body have different mitotic indices. From the following list, which normal tissues would you expect to have the highest mitotic index: muscle, skin, kidney, or lung? Explain your answer.