10. Radioactive isotopes in fossils decay at a constant rate. The ratio of radioactive isotope to
or the rock it was found
in. This is an example of
dating.
stable isotope can be examined to estimate the age of the fossil
• A. absolute
• B. magnetic
• C. relative
A
O D. Precambrian

The answer is cjust typing because the minimum is 20 bl bl bl

The basic repeating unit of nucleic acids are known as nucleotides. a nucleotide consists of three distinct chemical groups.

the glands which are associated with each description is given below:

pancreas - is an endocrine and exocrine gland that secretes juices with enzymes for digestion. salivary glands- with protection and digestion in the mouth. liver- secretes bile for digestion.   lachrymal glands - secrete tears to moisten eyes and protect them from particles and infection.   sweat gland -regulates water, salt, and temperature. oil glands - to form a protective barrier on the skin.   goblet cells - secrete mucus for protection.