How is observant used by scientists

How is a yeast cell different from an onion skin cell? A. Yeast lacks a cell membrane. An onion skin cell has a cell membrane. B. Yeast doesn't have a cell wall. The onion skin cell has a cell wall. C. Yeast has chloroplasts.

Reuben has recently taken up weight lifting and his friends at the gym mistakenly believe they should eat more protein to build muscle. the dri for protein for healthy adults is 0.8 g per kg body weight.

Explain the effect of offspring care on parental survival in kestrels.

In an ecosystem, which component is not recycled > water >energy >oxygen >carbon

Which of the following groups would contain the largest number of organisms

Which would provide the body with the most energy? a. Carrying oxygen from the lungs to the cells b. Breaking the bonds in a disaccharide c. Breaking a single carbon bond d. Creating bonds to make a simple sugar

When water changes from a liquid on Earth's surface to a gas in the atmosphere, this is known as transpiration condensation evaporation precipitation

The most famous pioner colonial times

Can a theory change over time? If so, how?

Which of the following needs a host to reproduce? 1) all of the above 2) eukaryotic cell 3) none of the above 4) prokaryotic cell 5) virus