What element do all organic compounds contain?

Nitrogen

Oxygen

Carbon

Hydrogen

Which of the following best compares Aristotle's method of classifying organisms to Linnaeus's classification system?

What is the name of the organs in the frog's reproductive system?

Most organisms break down sugar to produce usable energy through the process of A) diffusion. B) chemosynthesis. C) photosynthesis. D) cellular respiration.

Rabbits introduce and Australia over 100 years ago have become series Pesta farmers populations increase so drastically that they just place many native species of herbivores say one possible reason why the rabbit population was able to displace the

The two insulated beakers shown contain equal amounts of identical liquids. The temperature of Beaker A is 80°C. The temperature of Beaker B is 50°C. A copper rod connects the beakers. The system is then left alone for several hours.

The universal genetic language of dna is common to virtually all organisms on earth. True or False

Why use a negative control when running gel electrophoresis? if a band shows up in this lane, what does it tell you about your pcr products?

A balance in abiotic factors is vital to healthy ecosystems.

Explain the goals of a sustainable development.

When are to animals classified as belonging to the same species?