Answer:
Fossil records provide evidence of an increase in animal species at the same time that atmospheric oxygen levels increased.
Explanation:
A huge diversification among animal species occurred with the increase in the levels of atmospheric oxygen. The reason why the number of species increased drastically was that a whole new world opened up, the land. The land was open for exploitation and taking over, with every single niche free, so animals diversified and filled in pretty much all of the niches. The fossil records give us clues when this happened, as from only microorganisms there is a sharp rise in complex animals, coinciding with the increase of oxygen levels.
If it wasn't for the increase of atmospheric oxygen though this wouldn't have been possible. The oxygen in the atmosphere enabled animals to breathe on land. Also, it cooled off the global temperatures which were too high before the increase of atmospheric oxygen, making them suitable for life. And last but not least, the atmospheric oxygen resulted in the formation of the ozone layer, a layer that started to act as protection from the UV rays.
Answer:
not sure exactly what you're asking, but marine fish are evolved to live in salt water, and therefore cannot breathe properly in freshwater
Answer:
b. The number of each type of atom is the same for both the reactants and products.
Explanation:
A balanced chemical equation is characterized by each of the atoms of the reactants and the products being equal to each other. The atoms present in the reactants are also present in the products but are just rearranged. The equal number of atoms from both sides of the equation (reactants and products) follow the Law of Conservation of Mass.
I would say that oceans take a long time to cool at night and because of this the land can cool off faster and therefore cause cool air from the land to blow out to sea at least I think this is correct because I know for sure that oceans make coastal climates more mild than inland like Vancouver BC compared to the Prairies like Saskatchewan.
<span>It depends on the species of algae. It is usually measured in µm (micrometers) or µ (microns); values are equivalent. The Euglenoid has a cell diameter of 23 µm, while the Chlamydomonas species is much thinner, at 5-10 µm. The Cladophora species is larger, with cell diameters ranging up to 150 µm.</span>
