Global and local climate change also makes marine ecosystems more vulnerable to lower oxygen levels (hypoxia). Aquatic organisms cannot survive without the presence of dissolved oxygen in the water.
When the climate is warmer, the surface water warms up more quickly and its density becomes lower than that of the underlying waters. However, it is the mixture of waters of different depths that helps to oxygenate the deeper waters. If the surface water is warmer and less dense, it mixes less well with the more dense bottom waters. As a result, the oxygen content will be lower in some places (deeper places for example).
At oxygen levels below 30%, species that do not tolerate hypoxic conditions must migrate to other geographic areas. If they can not migrate, their survival may be threatened.
Answer:
This question is incomplete
Explanation:
This question is incomplete.
However, lions have 38 chromosomes (19 pairs) and <u>there cubs get their chromosomes from there parents</u>; with each parent donating 19 each. They also have a pair of chromosomes known as sex chromosomes (X and Y). The female always donates the X chromosome and the male donates either a X (which leads to a female cub) or a Y (which leads to a male cub), just like in many mammals.
NOTE: Chromosomes are threadlike structures in the nucleus of a cell that carry/stores genetic materials/genes.
The correct answer is that "<span>RNA polymerase binds to the promoter, which precedes the gene only on the template strand of DNA."
A gene is best described as </span>a chain<span> of DNA or RNA which codes for a molecule that has a </span>characteristic<span>. </span>for the duration of<span> gene expression, the DNA is first duplicated into RNA. The RNA </span>can be immediately practical<span> or be the intermediate template for a protein that </span>plays<span> a </span>characteristic<span>. The transmission of genes to an organism's offspring is </span>the idea<span> of the inheritance of phenotypic </span>traits<span>.</span>
Hairs are mostly fibrous proteins and are composed of keratin, and also the main constituent of skin, nails, wool, woof, feathers etc.
Keratin is the essential fibrous protein which has a structural and protective functions in the epithelium.
Answer:
star
Explanation:
a star forms with hydrogen
