Answer:
Undifferentiated inner cell mass
Explanation:
Human embryo has two types of cells in its initial stage, trophoblast and inner cell mass. Trophoblast forms the placenta and inner cell mass form the entire human body. Inner cell mass are pluripotent in nature i.e. they can give rise to any body part under right conditions.
Embryonic stem cells are derived from the inner cell mass. They are derived from pre implantation embryo since after implantation the inner cell mass begins to differentiate. Embryonic stem cells can replicate indefinitely without differentiating. They can give rise to all the three germ layers: ectoderm, mesoderm and endoderm. They can treat a number of disorders like genetic disorders, Parkinson's, spinal cord injury, cancers etc.
Most stars in the solar neighborhood are fainter and cooler than the Sun. There are also a handful of stars which are red and very bright (called red supergiants) and a few stars that are hot, but very faint (called white dwarfs).
Answer:
B. organic compounds I think if it's wrong then it might be A. sulfur molecules
I believe it is countries with little money. Ethnicity doesn’t necessarily play a part in it, that’d only make sense due to geographical planning. Although countries with large geographical areas sounds probable, not every space is habitual- look at Antartica, for example. Countries with little money likely won’t be able to provide education on safe sex, leading to more accidental conceptions. Additionally, families will also likely struggle financially in order to pay for conception. For the lack of education and materials available, poor countries typically have higher population growth.
Fertility rate is the average number of children borne per woman until the end of her r<span>eproductive life given a specific geographic space.
It can be calculated by summing all the specific f</span>ertility rate for each woman (average number of births/woman through five-year age groups) from 15-49.