What is the name of a classification key in which there are always two choices

Ocean tides result largely from the gravitational attraction of the A. core of Earth. B. sun. C. closest neighboring planets. D. moon. I think it's the moon ... Am I wrong?

A student wants to determine how well tulips will bloom at high temperatures. She knows they bloom well at room temperature, so she sets up groups at higher temperatures: 80°F, 90°F, and 100°F.

The arbitrary and capricious test is very well defined. a. true b. false

What are some ways to prevent wildfires?

What chemical messenger can directly influence gene expression

When you look out the window, you can see constantly moving air. air is cycled in order to reach equilibrium. B) since these change the density of air and we know the air flows from the region of high density to the region of low density.

What effects do deforestation have on the animals?

Which best defines a diploid cell during meiosis? a cell that has double the number of chromosomes as the parent cell a cell that has half the number of chromosomes as the parent cell a cell that has double the number of chromosomes as the daughter

What is the best definitionof magnetosphere? a. a magnetosphere is a magnetic field around earth. b. a magnetosphere is the groups of atoms that are lined up inside a magnet. c.

True or false: tertiary sources can draw from, or summarize, a secondary source.