How does the amount of uranium in zircon tell us how old the crystal is?

Which of these statements best describes the st. lawrence seaway? the st. lawrence seaway connects the st. lawrence river with the arctic ocean. the st. lawrence seaway provides an important trading route between the u.s. and mexico. the st. lawrence seaway provides an important trading route for the u.s, but has little value for canada. the st. lawrence seaway connects the great lakes, the st. lawrence river, and the atlantic ocean.

How do bacteria protect their genetic material and cytoplasm during harsh conditions

Which of the claims below does this model support? select all the claims that are supported