To concentrate is the verb form of the adjective concentrated. Write a sentence about solutions using the verb concentrate.

Finding fossils of coral reefs in nevada desert provides evidence that ... 1) nevada used to be much colder than it is today 2) an ocean once covered what is now nevada 3) there was a mistake because no coral reef exist in deserts 4) ancient coral

The scientific method can be best described as a plan or a set of

Time when cell grows and replicates DNA?

A student wants to test if a bean plant will grow taller under green light than under sunlight. Select from the drop-down menu the correct step of the scientific method that each statement describes.

three ways minerals form

Rubbing the balloons against the woolen fabric or your hair creates static electricity. This involves negatively charged particles (electrons) jumping to positively charged objects.

Which of the following is an excitatory neurotransmitter secreted by motor neurons innervating skeletal muscle? A) gamma aminobutyric acid B) acetylcholine C) cholinesterase D) norepinephrine

How does gas like oxygen get across the cell membrane?

Why are there so few aquatic plants and phytoplankton that live at the bottom zones in the ocean? a. the ocean floor contains many de composers b. most sunlight is absorbed before reaching these levels c. water is limiting factor d.

Which of the following is not a property of a base? Feels slippery to the touch Changes red litmus to blue Has a sour taste Produces OH - ions