Please can someone help me with the answer to this puzzle. (A large rock has been perched on the side of a mountain for many years.)

What change would it make if he suddenly rolled down the mountain?

please...

Seed plants that lived during the carboniferous impact life on earth today because a. they are the ancestors of all plant life on earth. b. their remains formed coal, which is an important resource. c. they produced fossils that are used to date many geologic events. d. their presence caused oxygen levels to drop, allowing animals to evolve.

2/6 of be by to 2/6 is to 24/72 ?

Plants in the tundra biomes have had to adapt to live long periods of time without a. cool temperatures b. sunlight c. oxygen d. water