What ingredient is used to sweeten foods & has a distinct flavor, and never spoils?

For photosynthetic organisms to evolve and become more abundant than chemosynthetic organisms, what variable must have changed in the environment of ancient earth? carbon dioxide must have become more abundant.

What happens if there is a change in the shape of a protein

Which of these is a characteristic of sexual reproduction

Why did Hershey and Chase label the viral DNA with radioactive phosphorous and not radioactive sulfur? a. DNA contains phosphorus and no sulfur. b. Proteins contain phosphorus and no sulfur. c. DNA contains sulfur and little phosphorus. d.

4 myths about sexuality and how you might prove these are misconceptions

Which of the following would likely extend the Earth's supply of a nonrenewable resource?

How many growing seasons do plants with herbaceous stems usually survive?

What is one advantage of having many small cells instead of one large cell? A. small cells do not have cell membranes B. with many small, cells you have more surface area C. small cells do not require a stable internal environment D.

What are some of the effects of the enhanced greenhouse effect?

Which statement correctly describes an interaction of the respiratory and circulatory systems? A. Breathing speeds up when heart rate slows down. B. Breathing and heart rate slow down during exercise. C.