Answer:
When the level of release of carbon dioxide during respiration and use of carbon dioxide during photosynthesis this results in a compensation point. At compensation point the net available carbon dioxide to phototrophs becomes zero. As, carbon dioxide is the chief ingredient for photosynthetic products like glucose and oxygen. These products are used up during the process of respiration. When the rates of two processes photosynthesis and respiration becomes equal. Phototrophic organisms will not be able to compensate for lack of carbon dioxide levels. Phototrophs will not be able to produce their food in the form of glucose and hence will not be able to respire too. This will result in lack of overall available food from phototrophs and lack of available oxygen for respiration. This will result in decline of organisms on earth.
Answer:
Preadaptations like tegument and body segmentation could have been used by insects and millipedes to survive in terrestrial habitats.
Explanation:
As crustaceans, millipedes and insects have a protective, hard tegument, which surface is frequently smooth. Some groups can also present spines, bristles, or tubercles. The tegument protects the animals against harmful stimuli of different nature, such as mechanic, thermal, chemical, etc. It is also an effective barrier against pathogen microorganisms and excessive dehydration. In groups like crustaceans and insects, as the external layer gets hard, the tegument constitutes an important support organ. It is composed of a simple, cubic epithelium called hypodermis, and secretes exoskeleton, which is composed of chitin and can also be shaped by calcareous impregnations. Chitin is an impermeable, light y hard substance, that allows life on land without dehydration. Segmentation (repetition of identical anatomical units) is another characteristic in these groups that have helped to domain terrestrial habitats. It seems like segmentation is highly advantageous from an evolution point of view because it is much easier to adapt each segment separately to environmental pressures, responding to different necessities, than adapting the whole body to it, developing a new organ for each necessity. Also, it is a strategy to defend themselves from predators by rolling up.
Answer: The state wants to see if the spill will have a continued impact on biodiversity.
Explanation: I am not entirely sure, use this as your last resort.
Correct Answer: B
All of these organisms are made up of at least one cell. The fourth one (Euglena) is a <u>unicellular</u> organism (made up of 1 cell), and the rest are multicellular organisms (made up of many cells).
Incorrect Answers:
A.
All of these organisms are not only made up of cells, but more specifically these organisms are all made up of <u><em>eukaryotic</em></u> cells. This means that their cells have a nucleus. The other classification of cells (<em><u>prokaryotic</u></em> cells) do not have a nucleus. These are basically just bacteria, and there are no bacteria pictured in this problem, so this is a false answer choice.
C.
Some of these organisms undergo photosynthesis, but not all of them do. Photosynthesis is the process in which organisms convert sunlight, water and CO2 into glucose and oxygen. This is how plants (and some other special organisms as well) "make their own food". There are several organisms on this list that are not green plants, so this is a false statement.
D.
Although these organisms are all made up of eukaryotic cells (having a nucleus), their cells are definitely not identical. One major difference is that between a PLANT eukaryotic cell and an ANIMAL eukaryotic cell (***see pic below***). Other differences would be seen as well if we compared cells from all of these organisms under a microscope, so this is a false answer choice.
Oxygen is an electron acceptor. Its waits at the end of the electron transport chain to accept the electrons and forms water, which is released from the cell.