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netineya [11]
3 years ago
5

Which pair of molecules are both compounds

Biology
1 answer:
Katena32 [7]3 years ago
8 0

Answer:

C. CO2, H2O

Explanation:

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What are your thoughts on dinosaurs?
Fantom [35]

Answer:

swag

Explanation:

5 0
3 years ago
Many scientists worry that the influence humans have on the biogeochemical and hydrologic cycles will cause lasting damage to Ea
melisa1 [442]

Answer:

Driving a car, smoking, burning of woods for heating purpose and cooking food.

Explanation:

Driving a car, smoking, burning of woods for heating purpose and cooking food are the activities that are performed in our home daily. These activities greatly affected the biogeochemical and hydrologic cycles by increasing the concentration of carbondioxide gas in the atmosphere. Burning of fossil fuels in the car engine and burning of woods releases carbondioxide gas that causes air pollution. The use of electric cars and electric heater can decrease the impact on these biogeochemical and hydrologic cycles.

7 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
"Evolved from other cells" shows which characteristic of life?
Luda [366]

Answer:

genetic information and reproduction

Explanation:

I think it's genetic information and reproduction

6 0
3 years ago
How is a scientific theory developed?
lyudmila [28]

Answer:

It is developed by a scientific method with observation and research

7 0
3 years ago
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