Do the following data come from an experiment or an observational study?A gene called ACTN3 encodes a protein which functions in fast-twitch muscles. Some people have a variant of this gene that cannot yield this protein. (So we might call the gene variant a possible non-sprinting gene.) To address the question of whether this gene is associated with sprinting ability, geneticists tested people from three different groups: world-class sprinters, world-class marathon runners, and a control group of non-athletes. In the samples tested, 6 % of the sprinters had the gene variant, compared with 18 % of the non-athletes and 24 % of the marathon runners. This study1 suggests that sprinters are less likely than non-sprinters to have the gene variant.

the plates spread at mid-ocean ridges (they are divergent plate boundaries) which allows magma to rise through the weakness between the plates. the magma then emerges as lava from the boundary and cools, creating a new crust.

absolute strength refers to the maximum force exerted by a body irrespective of body size. relative strength on the other hand is the force exerted by a body in relation to muscle size or body weight.

so the answer is: c. absolute strength measures strength regardless of your body size, while relative strength measures strength adjusted for your weight.

,identify or describe the affordable care act. how has aca changed healthcare in the us since implementation? you may professionally express your opinion on aca, do you think it will or hurt patient care?

some stis can be transmitted through a handshake. - false