1: In addition to observable traits, scientists use to classify living things. 2: It’s estimated that more than 2/3 of all classified organisms are insects. A(n) is a scientist who specializes in studying insects.

Chlorophyll is found in plant leaves and absorbs light from the sun to enable plants to perform photosynthesis. magnesium is an important component of chlorophyll. the concentration of magnesium ions is higher in the root-hair cells of plants than in the soil. which mechanism of ion uptake would best enable a plant to produce a steady supply of chlorophyll? osmosis diffusion passive transport active transport

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?

The earth's oceans are made up of chlorine, and trace elements. a) carbon, oxygen b) oxygen, silicon c) hydrogen, oxygen d) nitrogen, oxygen