The two pyrimidines are

Out of the seven main animal groups (fish, mammals, birds, insects, reptiles, amphibians, and arachnids), how many contain members with internal backbones? A. 5 B. 3 C. 7 D. 1

Plants, through the process of photosynthesis, use solar energy to produce the end product glucose. Since energy is used here, what type of reaction is photosynthesis? Endergonic reaction Exergonic reaction Reversible reaction

Josh picked up a rock from the sea bed. it was easy to lift. it felt much heavier when he carried it up to the beach. Why did the stone feel lighter when it was under the water?

How do we gather information about distant stars?

How would Sally's digestive function most likely be affected by the antibiotics

A confounding variable is another variable, other than the independent variable, that may have an effect upon your experiment's results.

Which of the following codes for a specific protein? Question 1 options: DNA gene enzyme chromosome

Any problem of inquiry can be proved or disproved using the scientific method. True False

What was the first living cells to evolve on earth?

Natural lakes are formed by erosion. ALL BUT one of these is a type of erosion that forms lakes. A) glaciers. B) gravity. C) rivers. D) wind.