The statement water is easily polluted..... is true. Water is pretty much the world's best solvent. So even toxic substances are easily dissolved in it and when that happens they pollute the water.
The answer is: A nerve block
A nerve block is a procedure of regional anesthesia, surgical or medical injections of substances, aimed at removing pain for a period of time, up to the final eradication of this pain, for therapeutic or diagnostic purposes.This procedure involves the local injection of anesthetic instead of pain. The anesthetic is usually directed to the nerve that serves the pain area.
The scientist that discovered cells by observing cork with a homemade microscope would be Robert Hooke.
Question:All known organisms use genetic information to produce protein molecules via the same genetic code. This finding strongly supports the hypothesis that __________.
a) the earliest macromolecules probably arose when lightning struck an oxygen-free atmosphere
b) all organisms are descended from one or a few common ancestors
c) the genetic code readily evolves by natural selection
d) there's only one possible way to encode information in a macromolecule
Answer:
b) all organisms are descended from one or a few common ancestors
Explanation:
Protein synthesis occurs when the nucleotide sequence of the mRNA is read in the form of genetic codes. A specific genetic code specifies the same amino acid in all living beings. For example, the code "UUU" codes for phenylalanine in all the living beings irrespective of their species. This suggests that all the life forms have originated from one or few common ancestors and the genetic code has been preserved during the course of evolution of various species.
The Mother and Father each give half of the chromosomes to the offspring, which will decide traits and inheritance.
Hope this helps!
