We haven't found evidence of life yet.
But it would be dependent on geography and planet structure because not all places are easy to live in.
E) is the correct answer hope this helps :)
Ventilation maintains a steep concentration gradient, blood at the exchange surface usually has lower O2 and higher CO2 content than the air (of for fish, the water) at the exchange surface. This is what allows for diffusion of O2 into the blood and CO2 out of the blood. Multicellular organisms have a greater number of cells so will have a higher energy demand than single cellular organisms, this demand can only be met by allowing the cells to respire, a ventilation system brings oxygen molecules which are a raw product of respiration into the hemoglobin of the blood to be transported to tissues. As surface area : volume ratio is very low so if there was no ventilation system and the organism instead relied on exchange of materials through the exposed skin it would be very difficult to met the high energy demand as less O2 and CO2 would be able to be exchanged.
Answer:
<em>Which arrow or arrows represent a release of carbon dioxide? What process is occurring at the arrow(s) you selected?</em>
- From factory emissions to carbon dioxide in atmosphere (<u>C</u>)
- The process occuring can be called as <em>Combustion</em>. In this process, organic matter is burned in the presence of oxygen (oxidizer). It releases energy and carbon dioxide because carbon in organic matter is oxidized to form CO2.
<em>Which arrow or arrows indicate a process that cycles carbon from living or nonliving organisms? Describe the process or processes you selected.</em>
- from dead organisms to fossils and fossil fuels (E)
- The process explained in the question can be stated as <em>Fossilisation</em>. In this process, dead remains of plants and animals are transformed to fossils under pressure. The organic matter is preserved according to the shape of organism.
<em>Which arrow or arrows represent reactions that demonstrate conservation of mass and energy? Explain your answer.</em>
- from factory emissions to carbon dioxide in atmosphere (C) & from carbon dioxide in atmosphere to photosynthesis (B)
- Two reactions represent the converstion of mass and energy. The burning of fossil fuel (mass) releases energy and carbon dioxide, which is again used by plants to store energy in the process of photosynthesis. This is shown in C and B part of the figure.
Answer:
A restriction enzyme is a protein that recognizes a specific, short nucleotide sequence and cuts the DNA only at that specific site.
Explanation:
