Cell membranes serve as barriers and gatekeepers. They are semi-permeable, which means that some molecules can diffuse across the lipid bilayer but others cannot.
This startle reflex (aka moro reflex) is/was present in us as newborns.
It's triggered when there's an unexpected reaction. Example: Loud noise, sudden movement.
The baby will tighten his/her body, fling out arms, sort of like giving him/herself a hug. It happens because the baby is trying to protect itself from harm.
It normally leaves thanks to the mother's care, normally 6 weeks after the newborn is born.
Answer:
Around 100,000 years ago, the Earth was going through a period of Ice Age. While the Glacial Period was not in full effect, it is reasonably concluded by researching the ending of the Ice Age and other Glacial Periods that the Earth was considerably colder than it is right now.
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<u>PLEASE</u><u> MARK</u><u> ME</u><u> BRAINLIEST</u><u>.</u></h3>
Answer:
i think it is the 3rd one
Answer:
IT doesn't affect any organisms because the are habita's
