The disappearing of bees and other pollinating insects is often used as a sign that an ecosystem is becoming unstable. Why are bees an important indicator of ecosystem health?

What is the relationship among births, deaths, and carrying capacity in equilibrium species? equilibrium species have a low birth rate and a low death rate and tend to stay near the carrying capacity.

The ancestors of birds emerged from the early mammals a. True b. False

The number of protons in one atom of an element is that element's

Describe the two main steps of cellular respiration used by both plants and animals to form ATP. In your description, explain where the reactants for the process come from and where the product and by-products go.

Living things cannot come from nonliving things. This statement supports which part of the cell theory? A) cells are the basic units of life B) all cells come from pre-existing cells C) all organisms are made up of 1 or more cells

Scientific notation for 0.000468

Aquaporins are proteins that control the passage of water molecules across a cell membrane. The protein forms a pore, or opening, in the membrane.

I have moist skin but no scales, and two pairs of legs. Although I have lungs and live on land, my young usually live in water and use gills to breathe.

Why is wind, like force, considered a vector quantity?

When did darwin arrive on the galapagos islands