6) which is a standard metric base unit, correctly matched with what it measures?
a) kelvin: time
b) second: time
c) meter: volume
d) gram: temperature

Melting glaciers is a serious threat to the environment what is the possible consequence of melting glaciers on polar bears?

The picture represents a structure of the respiratory system. which is the function of this structure? to bring air into the body to exchange oxygen with carbon dioxide to carry air to the lungs to release oxygen from the body

In what part of the body does the most muscle activity happen?