What are two ways scientists use evidence of past environments preserved in A. To confirm whether an organism could have lived where its fossils
are found
B. To confirm which organisms are most closely related to each
other
C. To confirm that conditions in different places have changed
D. To confirm why each individual organism became a fossil

Ascientific blank must be testable and capable of being proven false?

What is friction? how does it affect the motion of an object?

It's a snowy day and you're pulling a friend along a level road on a sled. you've both been taking physics, so she asks what you think the coefficient of friction between the sled and the snow is. you've been walking at a steady 1.5m/s, and the rope pulls up on the sled at a 32 ∘ angle. you estimate that the mass of the sled, with your friend on it, is 65 kg and that you're pulling with a force of 80 n .