(a) Polyvinyl chlonde
3. Write differences between a plan
4. Name the various organs in the
a) reproductive system of human
(b) reproductive system of human
5. What determines the sex of a ba
Answers
Answer:
Ans5)The sex of a baby is determined by its chromosome make-up at conception. An embryo with two X chromosomes will become a girl, while an embryo with an X-Y combination results in a boy," Ms Croft said.
Ans 4 b) The development of the reproductive systems begins soon after fertilization of the egg, with primordial gonads beginning to develop approximately one month after conception. Reproductive development continues in utero, but there is little change in the reproductive system between infancy and puberty.
Ans 4 a) The human reproductive system includes the male reproductive system which functions to produce and deposit sperm; and the female reproductive system which functions to produce egg cells, and to protect and nourish the fetus until birth. Humans have a high level of sexual differentiation.
Ans 3) Distinguish between a map and a plan
A map is a visual representation of an area—a symbolic depiction highlighting relationships between elements of that space such as objects, regions, and themes. Plans are a set of two-dimensional diagrams or drawings used to describe a place or an object, or to communicate building or fabrication instructions.
Ans A) Polyvinyl chloride is the world's third-most widely produced synthetic plastic polymer. About 40 million tons of PVC are produced each year. PVC comes in two basic forms: rigid and flexible. The rigid form of PVC is used in construction for pipe and in profile applications such as doors and windows.
Formula: (C2H3Cl)n
ChEBI ID: 53243
Melting point: 100 °C (212 °F) to 260 °C (500 °F)
Glass Transition Temperature: 82 °C (180 °F)
Effective heat of combustion: 17.95 MJ/kg
Specific heat (c): 0.9 kJ/(kg·K)
Explanation:
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