What is the fibrous protein that is found in hair and nails?

Which of the following is an advantage of sexual reproduction?

How does coal differ from pine trees as a source of energy? A. Coal can be replaced easily, while pine trees are difficult to replace. B. Coal is a nonrenewable resource, while pine trees are a renewable resource. C.

How can a star have a low apparent magnitude and a high absolute magnitude? A. if it is very close to Earth B. if it is a very young star C. if it is very far from Earth

Would a bond between carbon and oxygen be covalent or ionic?

There are currently about 320 crime laboratories in the United States. True or False

Scientists use a standardized taxonomic system to separate organisms into hierarchical groups based on similarities and differences in their structural and genetic characteristics Which of the following best explains why a standardized

What happens to atoms after an animal has died?

If an organism has high biological fitness in one environment, does that mean it would also have high biological fitness in another environment? Why or why not

Where is magnet the strongest A) at the poles B) South pole C) North pole D) None of the aboves

A piece of iron at 25 °C is dropped into a glass of water at 15 °C. Which statement is correct? Heat will flow from the iron to the water in the glass until both reach the same temperature.