Sandy is 3 years older than twice Darren's age.

How are stem cells similar to cancer

Describe the levels of structural organization of an animals body from cell to organism

Which is the following is located in the stratosphere? a. weather b. the ozone layer c. uv rays d. birds

The tectonic cycle describes the movement of Earth's crust. Recycled "new" oceanic crust is formed by at divergent boundaries. A. Weathering B. Seafloor Spreading C. Subduction D. Convergence

What two ions make up most of the salt in seawater with percents?

If a characteristic is found in bacteria, fungi, pine trees, snakes, and humans, when did it most likely evolve?

Which property allows objects that do not produce their own light to be seen

What is an example of recombinant dna technology?

How many chromosomes do humans with down syndrome have?

Which trophic level has the least amount of energy available for the next highest trophic level? a. secondary consumerb. omnivorec. decomposerd. producer