Answer:
The poisoned substance was mixed with arsenic-free zinc and sulfuric acid, resulting in arsine gas.
The gas was later ignited and decomposed into pure metallic arsenic. This test was highly sensitive and could detect even one-fiftieth of a milligram of arsenic. It was a remarkable discovery, since before that, arsenic was widely used as poison in enormous amounts of murders, impossible to detect and trace.
Around 40% of fish species live in fresh water ecosystems
<span>Same genes </span>
<span>The homologous chromosomes have the same genes in common. </span>Each cell has at least two sets of chromosomes which one comes from one’s father also called as paternal chromosome and mother, called as the maternal chromosomes. These chromosomes are what makes the child obtain the characters and may depend on the traits the parents possess. Homologous chromosomes are not duplicated chromosomes or identical however, they are analogous or similar. The alleles for a specific characteristics isn’t the same but the same genes are in the same order.<span>
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In respect to the first question, it can be said that around 8000 BC to 7000 BC is the time period where evidence of cultural sharing in Neolithic China began.
<span>One big impact of the sharing on the individual societies was the positive impact on the ways of animal domestication and also agriculture.</span>
