Answer:
B. Some countries have many sources of beryllium, and some have no sources of beryllium.
Explanation:
Beryllium is a very important mineral that is present in many countries. All countries did not have beryllium deposits. Some countries have many sources and deposits of beryllium, and some have no sources of beryllium. There are many deposits of beryllium in different parts of United states of America. Those countries which have no beryllium deposits have cell phones because they purchase cell phones from international market by paying money which can be earned through selling of its goods.
Answer:
An index fossil is also known as guide fossils or indicator fossil. They are fossils used to determine and identify geologic periods.
The main characteristics of an index fossil include :
1.It must be distinctive.
2.It must be widespread.
3. It must be abundant
4. It must be limited in geologic time.
Due to trends and studies of most fossil-bearing rocks being formed in the ocean, the major index fossils are mostly marine animal or plant organisms.
Multiple<span> allele </span>inheritances<span> are </span>traits controlled<span> by </span>more<span> than 2 alleles (ex: pigeons having 3 alleles of </span>one gene<span> govern their feather colour). The polygenic </span>inheritance <span>pattern of a </span>trait controlled<span> by two or </span>more genes<span>.
Hope this helps:D
Have a great rest of a brainly day!
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I'd say the answer is C but I'm not 100% sure. If not C then maybe B
The myometrium is the smooth muscle and second layer in the uterus which is <span>located between the endometrium</span><span> and the perimetrium.</span>
