What did the population pyramid of Canada look like in 1960? What will it look like in 2050? Explain how this will impact you in the future.

Which factors add to the greenhouse effect and are caused by human activities?

The biome that includes evergreen trees is the forest biome.

Which outcome is not caused by gravitational forcea. gas and dust come together to form a planet b. planets orbit a star c. two atoms come together to form a molecule d. stars cluster to form a galaxy