Why are Greenhouse gases important to life on Earth? A.
They are the gases plants need to grow.

B.
They keep meteors from hitting Earth by burning them up.

C.
They keep oxygen from escaping into outer space so living things can breathe.

D.
They trap in heat which keeps Earth at a temperature that is comfortable for most living things.

Which feature do highland climates have that lower elevation areas do not?

Achef makes salad dressing by mixing oil, vinegar, and spices, as shown. which type of matter is the salad dressing?

Two nitro no2 groups are chemically bonded to a patch of surface. they can't move to another location on the surface, but they can rotate (see sketch at right). it turns out that the amount of rotational kinetic energy each no2 group can have is required to be a multiple of ε, where =ε×1.010−24 j. in other words, each no2 group could have ε of rotational kinetic energy, or 2ε, or 3ε, and so forth — but it cannot have just any old amount of rotational kinetic energy. suppose the total rotational kinetic energy in this system is initially known to be 32ε. then, some heat is removed from the system, and the total rotational kinetic energy falls to 18ε. calculate the change in entropy. round your answer to 3 significant digits, and be sure it has the correct unit symbol.