Explanation:
To swim, they move their tails up and down, rather than back and forth as fishes do. This is because whales evolved from walking land mammals whose backbones did not naturally bend side to side, but up and down. ... Whales do the same thing as they swim, showing their ancient terrestrial heritage.
Cetaceans are fully aquatic marine mammals belonging to the order Artiodactyla, and branched off from other artiodactyls around 50 mya (million years ago). Cetaceans are thought to have evolved during the Eocene or earlier, sharing a closest common ancestor with hippopotamuses.
Answer:
Access. A basic feature of any greenhouse is access. ...
Vents. One of the first greenhouse features necessary is a means of controlling the climate – most importantly, venting excess heat. ...
Fans. Fans inside a greenhouse are necessary for two basic functions. ...
Rollup Sides. ...
Heaters. ...
Shelves and Benches. ...
Water. ...
Electricity.
Explanation:
theres more but these are the important ones .
Answer:
Relative to prokaryotic cells, eukaryotic cells are usually larger and more complex.
While states have been relatively effective in stopping <u>The depletion of the ozone layer </u> they have been less successful at stopping <u>Global climate change.</u>
Countries all across the globe decided to stop using ozone-diminishing compounds in order to protect the ozone layer from depleting.
The Vienna Convention for the Protection of the Ozone Layer in 1985 and the Montreal Protocol on Substances that Deplete the Ozone Layer in 1987 formalized this accord.
Ozone shields the Earth from the Sun's damaging ultraviolet (UV) radiation. Life on Earth would be extremely difficult without the Ozone layer in the atmosphere.
Plants and planktons, which provide sustenance for the majority of ocean life, cannot survive and thrive in high UV exposure.
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The geneticist who discovered the white eye mutation in drosophila and helped establish that genes are carried on chromosomes was Thomas Hunt Morgan.
Thomas Hunt Morgan One landmark of modern genetics can be dated to January 1910, when Thomas Hunt Morgan discovered a male of Drosophila melanogaster with white eyes.
What is genetics?
- The study of genes and heredity.
- Heredity is the passing of genetic information and traits from parents to offspring.
- Genetics is the study of genes and tries to explain what they are and how they work.
- children usually look like their parents because they have inherited their parent's genes.
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