Answer:
chemical reactions involve collisions between molecules. most collisions don't have either the right orientation or enough energy for the reaction to proceed. the molecules just bounce off each other, unchanged. incidentally that is why reactions proceed faster as the temperature increases - high temperature means molecules are moving faster
Explanation:
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Answer:
An insertion or deletion of nucleotides that is not a multiple of three
The embryo may develop into an C.) earthworm
"The Sperm's Long Journey. A man may ejaculate 40 million to 150 million sperm, which start swimming upstream toward the fallopian tubes on their mission to fertilize an egg. Fast-swimming sperm can reach the egg in a half an hour, while others may take days. The sperm can live up to 48-72 hours."
The function of villi, small finger-like projections in the intestines, is to
allow for more surface area in the small intestines. This way, absorbing nutrients from digested food into the blood would improve greatly. Although they do not
help in digestion, they are still important parts of the digestive system.
