Answer:
Sexual reproduction is the process in which gametes from two different sex combine together to form a new individual.
- The first stage of sexual reproduction is meiosis or gametogenesis. In this stage the diploid number (2n) of chromosomes reduced to a haploid number (n).
- In the next stage, the two gametes, both having haploid number (n) undergo fertilization and forms diploid zygote (2n) and the original number of chromosomes is restored.
- Then the diploid zygote undergoes mitosis and cell differentiation to form an embryo or offspring (2n).
Answer:
most cancers arise as cells acquire a series of mutations (changes in DNA) that make them divide more quickly, escape internal and external controls on division, and avoid programmed cell death 6start superscript, 6, end superscript.
Explanation:
hope it help
Nephrons the filteration unit .
The IQ reflects the relationship between a
childs metal age (MA) and his or her actual or chronological age(CA). One way
of determining the IQ of the child is to use the mathematical expression
derived by Wilhelm Stern. Stating that,
IQ=MA x 100/CA
where MA is the Mental Age and CA is the
chronological age.
Thus, the IQ for a child having a Mental Age of
6 and a chronological age is 6,
IQ=6 x100/6 =100
<span>Thus the IQ of the child is 100.</span>
<span>Answer:
There are only two real sources of energy on the earth. One comes from geothermal from the creation of the earth and the other comes from the sun. You can say wind and nuclear or water, but water's movement is related to the tectonic activity and shaping of the earth and its spin, wind comes from unequal heating of the earth by the sun and nuclear energy comes from isotopes that were formed by a star. So producers are able to harness one of those two energy sources, the sun. Trees and plants are so common because they are using free energy, they have discovered a way to get something for nothing essentially. Predators can use the nutrients they make to supply their own energy but in the end everything boils down to the producers ability to make energy from the sun.</span>
