Burning a candle is a chemical change. What is the primary evidence that burning the candle is a chemical reaction?

A) change in odor

B) change in color

C) formation of a solid

D) temperature change

Algae are important for which of the following reasons A. they are food sources for many aquatic organisms B. Parts of algae are used in foods that humans eat C. algae produce oxygen as a result of the process of photosynthesis D. All of the above

What do scientists believe would occur if Jupiter was larger?

When two hormones work together to accomplish an enhanced effect?

A medium has an antibiotic added that inhibits the growth of most bateria. only one species of bacteria can grow on this medium. based on this information, the medium would be functionally classified as

In an ecosystem makes eat salamanders and salamanders eat earthworms how would the ecosystem be affected if a large number of snakes are caught and moved out of the region as a part of a conservation program

The formation of pyrimidine dimers results from which of the following? spontaneous errors by DNA polymerase exposure to gamma radiation exposure to ultraviolet radiation exposure to intercalating agents

A student wants to test the hypothesis that an acidic environment will decrease enzyme activity. In the experiment, the student used an enzyme that breaks down hydrogen peroxide into water and bubbles of oxygen.

Which process makes it possible for the body to grow and repair? Meiosis Sexual reproduction Replication Mitosis

What is the value of x in the equation 2 (5x+4) = 17

A nurse is caring for a client with a history of falls. the nurse's first priority when caring for a client at risk for falls is: