How do scientist develop scientific explanations about subjects that are impossible to study through controlled experiments?

As a result of mitosis in a human body cell, the nucleus of each daughter cell contains how many chromosomes

A student is creating a table that compares theories, hypotheses, and laws. Theory Hypothesis Law Is supported by many observations Can be tested Cannot be changed Explains observations In which row should the student enter "No" in the column for

Which trophic level has the most energy

A new action potential will be generated and propagated from this area of a multipolar motor neuron A) Axon B) Axon hillock C) Axon terminal

With the input of solar energy, water changes from a liquid to a gas during the process of

A 5-year-old girl catches the flu from a friend at day care after the friend sneezed and wiped mucus on a toy that the girl played then with. In this case, what is the portal of exit in the chain of infection?

Why does a tiger look so much different as an adult

Why do you think some nerve cells are long and thin?

What is the name of the macromolecules that makes up DNA

How many cells does meiosis produce