Awooden block each is placed on a wooden table and a wooden ramp, as shown. the blocks are identical in all respects. ten gram weights are added to the pans. the block placed on the ramp begins to move first. which statement explains this observation

Which of the following examples can cause gene flow between populations? a.an increase in predators to a population of zebra b.a volcanic eruption that kills half of a population of mice c.bird droppings that contain seeds from a different location d.a person that sprays a toxin on a group of mosquitoes

Why did rutherford say that bombarding atoms with particles was like "playing with marbles" what

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion