Answer:
c a b
Explanation:
they go from having legs and a jaw,then no legs and jaw,finally to no jaw
Answer:
Carbon
Explanation:
Air — carbon dioxide
Rock — many rocks include carbon, like diamonds and coal
Soil — again, rocks include carbon
Living things — all living things use carbon in one way or another
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Unconventional or non criteria pollutants can include several toxic or non-toxic elements. Toxic chemicals, such as benzene, beryllium, PCBs, asbestos and vinyl chloride are man-made unconventional toxic pollutants that are regulated by the EPA. Other forms of unconventional pollution include noise, unpleasant odors and light pollution as well as aesthetic factors.
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Answer:
To reach and fertilize an egg, sperm must move — wriggling and swimming through a woman's cervix, uterus and fallopian tubes. This is known as motility. You're most likely to be fertile if at least 40% of your sperm are moving.
Explanation:
The true difference between the two cells is prokaryotes
a microscopic single-celled organism that has neither a distinct nucleus with a membrane nor other specialized organelles. On the other hand, Eukaryotes are organisms consisting of a cell or cells in which the genetic material is DNA in the form of chromosomes contained within a distinct nucleus. Eukaryotes include all living organisms other than the eubacteria and archaebacteria.