Answer:
One very important chlorophyll is chlorophyll a. All photosynthetic organisms (except a few groups of bacteria) have this as their main photosynthetic pigment. It is important because only it can participate directly in the light reactions, which convert solar energy to chemical energy.
Explanation:
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XD I know this is weird for a guy to be answering this but I'm in wellness class so. the placenta is a flattened circular organ in the uterus of pregnant eutherian mammals, nourishing and maintaining the fetus through the umbilical cord. <span>The </span>placenta<span> is also an organ that develops in a female humans uterus during pregnancy. This structure provides oxygen and nutrients to your growing baby and removes waste products from your baby's blood. The </span>placenta<span> attaches to the wall of your uterus, and your baby's umbilical cord arises from it. The baby will come out malnourished or small or some kind of undergone experience and will die soon.</span>
The word you're looking for is Exoskeleton. The outer covering is called an EXOSKELETON which is a hard covering on the outside of the body that provides both support and protection. The exoskeleton is made of CHITIN. Some exoskeletons are leathery like caterpillars, and some are tough and hard like ticks and crabs.
Evolution is a change in physical or psychological characteristics of a species over several generations. This change of characteristics is often brought upon by environmental distortion through the process of natural selection. A variation could include having different colors or for a bird wider Beak. In a dark environment those with darker colors would have an easier time surviving than those with lighter colors. In a forest where there are only hard seeds, a bird with a wider beak will have an easier time breaking those seeds than those who don’t. Those more advantageous traits will help those creatures survive better in their environment and pass on their genes unlike those don’t have useful or straight up disadvantageous traits will struggle to survive or just go extinct. Over a couple of generation only the with those useful traits will be left.
Here is an example let’s say that there were large amount of bears with black fur living in a deciduous forest environment. There are also a very small number of bears with white fur also living there. The black bears would have a clear advantage over the white bear when it comes to catching prey as they can camouflage and since they are bears if winter hits they go into hibernation so having white fur wouldn’t help as the whole point is to grow fat and go to sleep. Now let’s say an ice age happens, those bears who are out of hibernation have to deal with a cold environment all year long. Now that black fur that help those black bears thrive by Camouflage are now a clear give away but white bear can blend in perfectly with their environment allowing them to hunt. Over a few generations the majority of the bear population wouldn’t be black but white.
