The first is gene sequencing. This allows the sequence of nucleotides on DNA of different organisms to
be identified. The sequence is then compared the bigger the difference in this sequence,
the stranger the organisms are with regards to the evolutionary relationship.
<span>The second is
carbon dating. This enables anthropologists
to determine the age of fossils by calculating the time taken, in half-lives,
by particular elements to decay, such as carbon-14 </span>
"Water quality" may include the amounts of dissolved oxygen
and the levels of algal growth, pollutants which may be present and the pH level. Water quality effects also which types of organisms can
survive in a body of water.
Shellfish require a high level
of dissolved oxygen and their abundance is an indication of good water quality. Shellfish are sensitive to changes in the ecosystem and they cannot easily escape changes in the water quality. These are one of the reasons why shellfish are good indicators of water quality.
Sex linkage genes are genes that are expressed together with sex genes, for example hemophilia which is linked on the X- gene. Genotype is the genetic make up of an individual. Females can be carriers, normal or have the disorder unlike males who cant be carriers since they there is no 2nd chromosomes to mask the first chromosome. The Genotype of career female will be XMXm
Answer: 1.carbon
2.carbon dioxide
Explanation:All animals exhale out carbon dioxide during respiration. Carbon dioxide is a byproduct of respiration, it Is harmful If it stays in the body for long and needs to be excreted out from the body
Plants instead of excreting out carbon dioxide use it produce glucose and oxygen, that is later on used by the animals themselves
C. Carbon.
Carbon is the essential component of Proteins, fats, and Carbohydrate, which make up all organisms.
