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sveta [45]
3 years ago
11

15. Which of the following sources of pollution is currently considered the dominant source of carbon dioxide? (a) Cellular resp

iration (c) Combustion of fossil fuels (b) Freshwater sources (lakes, streams) (d) Photosynthesis
Biology
1 answer:
drek231 [11]3 years ago
4 0

Answer:

c) Combustion of fossil fuels

Explanation:

Burning of fossil fuels is the main cause of increasing carbondioxide concentration in the environment which results in air pollution. This increase in carbondioxide concentration absorbed more heat energy from reflected solar radiation which increases the temperature of earth surface causes global warming. Due to this global warming, snow melting occurs on the poles of the earth which increases sea level.

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All animals are
ANEK [815]

The correct answer is option a, that is, multicellular, heterotrophic, and diploid.  

Animals refer to the multicellular eukaryotic species, which forms the biological kingdom Animalia. Animals exhibit many features, which distinguish them from other living species. The animals are multicellular and eukaryotic, unlike prokaryotic bacteria, and unlike protists that are eukaryotic but unicellular.  

The animals are heterotrophic, not like algae and plants that generate their own food. Almost all the animals make use of some kind of sexual reproduction. They are diploid and generate haploid gametes by the process of meiosis, the larger non-motile gametes are ova and the smaller motile gametes are spermatozoa.  


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3 years ago
Ned is designing an experiment to test which hand sanitizer kills the most E. coli bacteria. In order for Ned's results to be va
SVETLANKA909090 [29]

test the hand sanitizers on bacterial colonies that are kept in the exact same environmental conditions, such as temperature and light level

7 0
3 years ago
What is feed vs feedstuff
navik [9.2K]

Answer:

um feed is what you eat and feed stuff is what you use to make the stuff you eat

Explanation:

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3 years ago
he following is NOT true about trophic levels: Primary consumers belong to the first trophic level. Secondary consumers belong t
seraphim [82]

Answer:

Animals capable of feeding at many trophic levels will be able to survive if portions of their food supply are decreased or eliminate is not true of about trophic levels

Explanation:

This is because each trophic levels represent energy flow and supply of food to the organisms in the trophic levels. Energy are pass from one tropic levels to another as a result of source of food there. Plants majorly are the primary producers and the primary consumers depend on it. Therefore, if the source of food supply is eliminated in a trophic level, the organisms I'm the trophic level will not be able to survive.

8 0
3 years ago
Which era ended in the greatest mass extinction event in world history?
stich3 [128]
The 2nd one hope this helps! :)
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