what is the term for a group of organisms that are able to interbreed and produce fertile fertile offspring

Classify the following items based on the type of polymer they are made from: raincoats and leather shoes. A. Both are made from synthetic polymers. B. Leather shoes are made from natural polymers; raincoats are made from synthetic polymers. C.

How many moles are in 15.5-g SiO2

Whats the meaning of life? This is a hard question to answer ... Some may think its rude to ask or they might be wondering the same thing ... Write and explain what you think it is ...

Is the change in color of tree leaves in the fall an example of a physical change

Why does ice float after it crystallizes? Its mass is greater than water. Its density is greater than water. Its density is less than water. Air trapped in ice causes it to float.

It is widely known that fossil fuels pollute the environment and cause harmful effects. Why then are fossil fuels still being widely used? 1. not enough of society knows the harmful nature of fossil fuels 2.

What is hyphen notation

The density of aluminum is 2.70g/cm^3. a piece of aluminum foil has a volume of 54.0 cm^3. what is the mass of this piece of aluminum foil?

Describe how the atoms in Calcium Chloride obey the octet rule.

How many milliliters of 2.55M NaOH is needed to make 125mL of 0.75M NaOH solution?