(Q001) In this lab, we considered various human adaptations. It important to remember that many of these adaptations evolved to suit environmental circumstances of the past, and that they may be less helpful even maladaptive) in today's world. For example, humans are adapted to store fat in the body for later use. This is very helpful during times when food is limited ( such as during extended droughts) because allows us to live on the fat stores of our bodies. However, in much of the world today, there is food abundance rather than food scarcity. In the face of food abundance in many populations today, our ability to store fat becomes maladaptive and contributes to obesity and related health problems ( type 2 diabetes, heart disease,

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explanation:

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multiplying and dividing the two decimals and the eqations by the same number of the overalls

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!