Biology, 15.01.2021 21:30, nakeytrag

What is a reason some think the evolutionary changes could not
produce an eye?
Only intelligent organisms possess eyes.
Many complex parts must work together,
Eyes have never evolved in non-animals.
There is no evidence.

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answered: Guest

parasites can detrimentally affect their host, but also must not allow their host to die before they can complete their life cycle. some parasites have complex life cycles with many different hosts, and have had to find ways of persisting in many different environments during the change from one host to another. ectoparasites live outside the body of the host, and can more easily disperse, but are more exposed to predators, parasites, parasitoids. endoparasites live inside the body of the host, and are therefore protected from the outside environment. but they can be attacked by the host's immune system. they have therefore developed mechanisms for dispersal such as complex life cycles.

answered: Guest

If the experiment was perfomed more then once and you get the same results

answered: Guest

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!

answered: Guest

paper covers rock.

explanation:

rock only smashes scissors.

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