A friend explained to

you that she combined

two substances and

saw a color change.

What additional

information would you

need to determine if this

change was a chemical

or physical change?

How does a mutation affect a gene? A. A mutation changes the sequence of RNA bases in a gene. B. A mutation creates the sequence of RNA bases in a gene. C. A mutation changes the sequence of DNA bases in a gene. D.

Is a rodent red blood cell prokaryotic or eukaryotic

Mrs. And Mr. Smith both have widow's peaks (dominant). Their first child also has a widow's peak, but their second child doesnt. Mr. Smith accuses Nrs. Smith of being unfaithful to him.

What type of plate boundary produces earthquakes with the greatest focal depth?

The skeletal system is responsible for all BUT one of these functions in our body.

Many species can reproduce either asexually or sexually. What might be the evolutionary significance of the switch from asexual to sexual reproduction that occurs in some organisms when the environment becomes unfavorable?

How do you set up an science experiment if heavy metal affects plant growth

If you put a carnation in water through what process does it enter the steam

The collective reactions with a cell or an organism are known as

Which term describes baody parts of different organisms that are similar in form