William finds a piece of pure iron in his garden. After a few days, the iron begins to rust. What are the two types of substances involved in the rusting of the iron

Which answer best explains why ATP is regarded as a renewable resource within the cell?

Choose the best description of an umbra. A. Ring of light around an opaque object B. A partial shadow C. The darkest part of a shadow D. An opaque object

Twin boys both have a gene associated with aggressive tendencies. what is the most likely outcome to be observed in their behavior as they grow up?

What's the second step of malaria

If you hear a higher pitch from a clarinet than from a saxophone, how do the frequencies of the sound waves from the clarinet compare to those of the saxophone? The saxophone's waves have a higher frequency than the clarinet.

Which best describes the interaction between DNA and RNA during protein synthesis?

Who gave the brain its name

If the mother is homozygous recessive for the trait and the father is heterozygous, what are the chances their child will have a short big toe? A. 75% B. 50% C. 0% D. 25%

Give one example of homology and explain why homology is evidence for evolution.

A unicellular organism is a living thing that meets all of the basic needs with just one cell. A multicellular organism can require up to several trillion cells to do the same thing. Which one do you consider to be more advanced?