Answer:
c.
Explanation:
A new substances are formed and in a physical change no new substances are formed
Breast tenderness would be considered a presumptive sign of pregnancy.
The fertilization of sperm and ovum occurs at ampulla isthmic junction of fallopian tube. This ovum travels to the uterus and joins with the uterus for further development. Two weeks after the fertilization or conception, pregnancy is said to begin.
This is accompanied with missed periods or menstruation. Other important presumptive signs include nausea, vomiting, breast tiredness, back pain, poor sleep etc. In humans, the pregnancy or gestational period lasts for around 40 weeks or 80 days. Estrogen, progesterone and human chorionic gonadotropin are the three hormones that rise at the start of pregnancy.
Estrogen regulates progesterone and increases blood flow while progesterone prepares the uterus for implantation of fertilized ovum. The third hormones indicates the creation of placenta.
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Yes it would As great as communism could be, this seems to be the weak link. A lack of individual incentive
Answer:
Why u Ask in SST
Explanation:
Anyway there are 118 atons in periodic table
they are the smallest indivisible unit in matter
they are made of proton, neutron and electron.
