Greenhouse gases are important to climate change because they A. Are the best way to measure if the temperature is changing over time

B. help to trap energy from the sun in the Earth's atmosphere

C. help to block the radiation of the sun from harming Earth

D. are the main reason that the earth becomes warmer and cooler

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.

Which units ate used to measure both velocity and speed? check all that apply

The same agricultural practices are used in every country of the world. select the best answer from the choices provided t f