How should you test a hypothesis?

by writing a mathematical equation

by making a single observation

by performing a controlled experiment

by answering a series of questions

Which group includes the simplest of organisms that do not have a nucleus? a. bacteria b. archaea c. protista d. archae and bacteria e. fungi?

Classes of pteridophytes

How carbon is absorbed?

How does heat flow from one object to another

Which factor was most responsible for the production of oxygen by the elodea? a the presence of light stimulated photosynthesis. b the plant contained a large number of mitochondria.

The visual predation hypothesis proposes that:a) better vision allowed for better access to fruits and small insects b) primate traits arose as adaptations to preying on insects and small animals c) species could see predators from farther away,

A researcher wants to know whether children eating a high-protein breakfast will have a higher test grade. half of the children in the study eat a high-protein breakfast while the other half eats their normal diet.

What is the mass of an atom that has 4 protons, 5 neutrons and 4 electrons? 5 8 9 13

Which of the following is one role of RNA polymerase during transcription? to switch uracil with thymine on the exposed gene to build a molecule of mRNA to break down an already existing protein to produce a start sequence

What is diluvial water