Forsythia mermaids have a range of tails from 2-4 meters in length as a result of genetic variation. Most mermaid tails are around 3 meters. On the reef they live on, a new predator of the mermaid arrived and its quick speed meant only mermaids who could maneuver quickly, those with longer tails, were able to survive. Over the next few generations, what do you predict happened to the tail length of the Forsythia mermaids?

Question 3 options:

The tail length stayed the same because maneuverability was not the only variable playing a role in their survival.

The tail length increased because those with the longer tails survived and were able to reproduce and pass on their long tailed gene to the next generation.

The tail length decreased because shorter tailed mermaids could swim faster and avoid predators.

The mermaids went extinct as a result of the predator.

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!

digestion

it excretes wastes