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Svetlanka [38]
3 years ago
11

How does the light reaction of photosynthesis affect Earth’s supply of oxygen?

Biology
2 answers:
astra-53 [7]3 years ago
8 0

Answer: the last one (:

Explanation:

gtnhenbr [62]3 years ago
6 0

Im assuming you mean the light-dependent reaction? if so the answer is the 3rd one

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I NEED HELP PLEASE <br><br> will mark brainliest
ser-zykov [4K]

Answer:

As one goes up the other does as well for the first 2 but they aren't proportional (it is not simple cause and effect as there is a lot of factors)

The last question is to decrease their emissions as rising temperature is being effected by rising CO2 levels and rising temperature can cause a feedback loop causing more rising temperature

Explanation:

7 0
3 years ago
Shamona, a pregnant mother in Flint, Michigan, is concerned about the drinking water, which shows high levels of lead. Shamona s
STatiana [176]

Answer:

Option (3).

Explanation:

Teratogens may be defined as the chemicals that can cause birth defects in the fetus. Substances like alcohol, lead and nicotine acts as the main agents of tertaogens.

Shamona is drinking water that contains high level of lead. The element lead is harmful for the fetus. Even the small concentration of lead is enough to cause birth defects. The lead exposure can cause the abnormal development of brain and damages the brain of fetus. The fetus has low birth weight also.

Thus, the correct answer is option (3).

6 0
3 years ago
PUNTOS POSIB!
Sindrei [870]

Aim

When dividing the world into zoogeographical regions, Alfred Russel Wallace stipulated a set of criteria by which regions should be determined, foremost the use of generic rather than species distributions. Yet, recent updates of Wallace's scheme have not followed his reasoning, probably explaining in part the discrepancies found. Using a recently developed quantitative method, we evaluated the world's zoogeographical regions following his criteria as closely as possible.

Location

Global.

Methods

We subjected presence–absence data from range maps of birds, mammals and amphibians to an innovative clustering algorithm, affinity propagation. We used genera as our taxonomic rank, although species and familial ranks were also assessed, to evaluate how divergence from Wallace's criteria influences the results. We also accepted Wallace's argument that bats and migratory birds should be excluded (although he was contradictory about the birds) and devised a procedure to determine the optimal number of regions to eliminate subjectivity in delimiting the number of regions.

Results

Regions attained using genera (eight for mammals and birds and six for amphibians) strongly coincided with the regions proposed by Wallace. The regions for amphibians were nearly identical to Wallace's scheme, whereas we obtained two new ‘regions’ for mammals and two for birds that largely coincide with Wallace's subregions. As argued by Wallace, there are strong reasons not to consider these as being equivalent to the six main regions. Species distributions generated many small regions related to contemporary climate and vegetation patterns, whereas at the familial rank regions were very broad. The differences between our generic maps and Wallace's all involve areas which he identified as being uncertain in his regionalization.

Main conclusions

Despite more than 135 years of additional knowledge of distributions, the shuffling of generic concepts, and the development of computers and complex analytical techniques, Wallace's zoogeographical regions appear to be no less valid than they were when he proposed them. Recent studies re‐evaluating Wallace's scheme should not be considered updates as such because they have not followed Wallace's reasoning, and all computer‐based analyses, including this one, are subject to the vagaries of the particular methods used.

7 0
3 years ago
What percentage of the total energy consumed was converted to forms that were unusable to become new growth for the chipmunk?
mrs_skeptik [129]

The percentage of energy that is unusable is obtained as 96.1 %.

<h3>What is the percentage of unusable to become new growth for the chipmunk?</h3>

We know from the law of conservation of energy that energy is neither created nor destroyed in the ecosystem but is converted from one form to another. We know that the ecosystem is a self supporting system in which there is an exchange of materials and energy. Energy flows from the producers to the consumers and some of this energy is dissipated along the way and is lost as heat during the transition.

The metabolic activities of an organism takes up some part of the energy that it receives from the sun.

From the question, we know that the energy consumed is 1000 J and the energy that is lost to waste and to respiration is 177 J and 784 J respectively. This implies that the available energy is 39J.

The percent of energy that is usable is;  39 J/100J * 100/1 = 3.9 %

The percent of energy that is unusable is; 961 J/1000 J × 100 % = 96.1 %

Learn more about energy in the ecosystem:brainly.com/question/13979184?

#SPJ1

5 0
2 years ago
How does the size of a eukaryotic organism normally compare to the size of a prokaryotic organism? A. Eukaryotes and prokaryotes
lora16 [44]
The answer for this question is B.


Hope this helped!!
8 0
3 years ago
Read 2 more answers
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