Answer:
they servive only in living cells.
Explanation:
the virus are connecting link between living and non-living. they are unable to perform life process outside the living cells. outside the living cells, the viruses behave as simple chemical so they are called as obligate intracellular parasite.
When the sand hits the still water it sinks, because there is not enough current
A vestigial structure is a structure that kind-of just "hangs out" in our bodies. We don't really need it, yet it is there. So, why is it there??? We probably needed it, for example, when we needed to digest plants. (Appendix) Some say that the appendix was used for digesting plants and berries, but it is really just speculation. We "evolved" to not need the appendix.
Here are some other vestigial examples: wisdom teeth, tail bone, pelvic bone in a snake, and wings on a flightless bird.
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Answer:
Food chains show a single path of energy in an ecosystem, and food webs show all the overlapping food chains in that ecosystem. Food webs show the path of energy in an ecosystem, and food chains show the path of nutrients in that ecosystem
Explanation:
Answer: amino acids can be formed together to make proteins. They can be obtained by food like eggs tofu and nuts. There are 20 different amino acids but the human body only needs 10 of them to live. These 10 amino acids are called essential amino acids. Amino acids are made up of amine , carboxyl and an R group.
Explanation: you can find amino acids on earth from food that is filled with protein . Meat eggs and nuts are good options.
