Answer: cytokinesis is the splitting of a single cell into two daughter cells after telophase of mitosis is completed
Explanation:
A chemical change happens to form a precipitate
Answer:
- allows fuels to burn forms
- is the gas that animals breathe
- forms ozone that absorbs the Sun's harmful rays
Explanation:
Oxygen is a powerful oxidizer (oxidizing agent or oxidant) that burns the fossil fuel, reacts with carbon, and produce CO2/CO. Although, it is not a sole oxidizer available on Earth but 99.9% of combustion reactions takes place in the presence of oxygen. It does the job by accepting electrons very fast in its valence shell.
Animals use oxygen to breath which produces ATPs through a series of chemical reactions particularly in electron transport chain. Again, it acts as a oxidizer and accepts electron in the electron transport chain. This gradient of electron flow is necessary for ATP production. In the end, water and CO2 are produced with ATPs.
Oxygen molecules in the stratosphere reacts with solar radiation (UV) and produce oxygen atoms. Thereon, each atom reacts further with the oxygen molecule to produce ozone. Ozone layer acts as a shield and doesn't allow penetration of harmful rays to the biosphere where living organisms are present.
An organism that can make its own food is called an "Auto-troph". They maybe of two types:
1) Photo-Autotroph (Get source by sunlight)
2) Chemo-Autotroph (Get source by chemicals i.e., CH₄, NH₃ etc.)
Hope this helps!
Answer:
Hydrogen and helium.
Explanation:
Extrasolar planets, also called exoplanets are the planets that are placed out of the solar system and it orbits around another star, not the Sun. The planets that are not orbiting around the Sun are made of two easiest elements, and those elements are hydrogen and helium. Extrasolar planets are very strange objects that are not even close to looking like Earth.