Sabrina and chris are researching underwater mountains called seamounts. sabrina says that they are formed by divergent plates, because they occur near mid-ocean ridges. chris says they are formed by meteors that have crashed into the ocean, because he saw it in an action movie. who has the better scientific claim? a) sabrina, because her claim is based on research and logic. b) sabrina, because she doesn't watch movies. c) chris, because he has considered all the possible explanations. d) chris, because there is no data to prove him wrong.

The correct answer is A. Sabrina, because her claim is based on research and logic.

Explanation

A scientific claim is a way of proving a phenomenon (in this case a natural phenomenon) in which results of scientific tests are used in order to give reliability to the proposed answers, for this reason, Sabrina's statement that says that Seamounts are the result of a divergent plaque process is a scientific claim because it has been proven, while Chris's claim based on what he saw in a movie is not considered a scientific claim because he has no proof. So, the correct answer is A. Sabrina, because her claim is based on research and logic.

cells use diffusion to get substances in and out of themselves. that diffusion will occur across the cell membrane or the outer covering of the cell. because we are talking about the surface of the cell, surface area and volume are  important factors here. as a cell increases in size, its surface area and volume increase as well.  we call that the surface area to volume ratio (sa: vol).  but the catch is that  volume increases at a greater rate than surface  area. in other words, as a cell gets bigger, the sa: vol gets smaller. so a really small cell like bacteria is mostly cell membrane (surface) with very little contents (volume). a really big cell like an egg, is mostly insides with a super thin membrane. so what ends up happening is that the cell cannot efficiently diffuse all of the stuff it needs in/out to survive. therefore cell size is limited to about 100mm. so how do we make organisms bigger than 100mm? cells divide! by dividing and becoming multicellular, organisms are able to grow!   check out the diagrams i attached to see the effect of sa: vol. i hope this ! good luck!