Why were Archaea and Bacteria grouped together by biologists until recently?

A. They look similar.

B. They have very similar DNA.

C. They are both very ancient organisms.

D. They both perform the same ecological function.

What is the matter in organisms made of?

The solutions listed below are in two arms of a tube separated by a semipermeable membrane. The solution in the left arm is given first. In which case the osmotic flow proceeds from the right to the left arm? Group of answer choices 0.

Dolphins are highly social animals, often living in pods of up to a dozen individuals. What kinds of behaviors have been studied in these pods to demonstrate their interdependence and social exchanges?

Dr. Grey discovers a new drug that she hypothesizes will increase fat storage in rabbits. She designs an experiment to test her hypothesis. Dr. Grey separates twelve rabbits into two equal groups and measures their body fat individually.

During the Paleozoic Era there was explosion of life in the oceans. Most of the continents were covered in warm, shallow seas. What is true about life on Earth at this time?

A person is walking through a park. A branch from a tree falls, nearly hitting her. Her heartbeat speeds up. Which part of the nervous system was responsible for this?

A traveler finds herself in a biome that is full of trees. She notices that there are many plants growing on the ground. Which of the following clues would confirm which biome this is? A. Many animals are ending their hibernation. B.

How can erosion be slowed down?

What's the taxonomy chart for fungus?

During which part of the ATP cycle is a phosphate group removed from ATP, energy released, and a water molecule added to ATP?