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Brums [2.3K]
3 years ago
7

Which of the following representations is the same molecule as the one below?

Biology
2 answers:
Flura [38]3 years ago
5 0
<span>The best and most correct answer among the choices provided by the question is the first choice or letter A.

Assuming the black is carbon and grey<span>/white is </span>hydrogen<span> </span>

I hope my answer has come to your help. God bless and have a nice day ahead!
</span>
balandron [24]3 years ago
5 0

Answer:

The correct answer is structure A

Explanation:

The molecule is a hydrocarbon chain, which is composed by carbon atoms (in black) and hydrogen atoms (in grey) and it thas 8 carbons bonded by single bonds. The first and the last carbons has 3 hydrogens, the rest has 2 hydrogens (because they participate in two C-C bonds). The other options are not equal: structure B is a hydrocarbon chain with 7 carbon atoms, structure C has 10 carbon atoms and structure D is composed by a 3-carbon chain bonded to another 3-carbon chain by an hydrogen atom.

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Canada’s rivers provide it with which natural resource
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Lakes and rivers provide Canadians not only with drinking water, food, transportation networks and recreational opportunities, but also with hydroelectricity. In fact, Canada is one of few countries around the world to rely on hydropower for more than half of its electricity needs.

Explanation:

4 0
3 years ago
How did humanity start?
svetoff [14.1K]




Human evolution

Human evolution is the lengthy process of change by which people originated from apelike ancestors. Scientific evidence shows that the physical and behavioral traits shared by all people originated from apelike ancestors and evolved over a period of approximately six million years.
One of the earliest defining human traits, bipedalism -- the ability to walk on two legs -- evolved over 4 million years ago. Other important human characteristics -- such as a large and complex brain, the ability to make and use tools, and the capacity for language -- developed more recently. Many advanced traits -- including complex symbolic expression, art, and elaborate cultural diversity -- emerged mainly during the past 100,000 years.
Humans are primates. Physical and genetic similarities show that the modern human species, Homo sapiens, has a very close relationship to another group of primate species, the apes. Humans and the great apes (large apes) of Africa -- chimpanzees (including bonobos, or so-called “pygmy chimpanzees”) and gorillas -- share a common ancestor that lived between 8 and 6 million years ago. Humans first evolved in Africa, and much of human evolution occurred on that continent. The fossils of early humans who lived between 6 and 2 million years ago come entirely from Africa.
Most scientists currently recognize some 15 to 20 different species of early humans. Scientists do not all agree, however, about how these species are related or which ones simply died out. Many early human species -- certainly the majority of them – left no living descendants. Scientists also debate over how to identify and classify particular species of early humans, and about what factors influenced the evolution and extinction of each species.
Early humans first migrated out of Africa into Asia probably between 2 million and 1.8 million years ago. They entered Europe somewhat later, between 1.5 million and 1 million years. Species of modern humans populated many parts of the world much later. For instance, people first came to Australia probably within the past 60,000 years and to the Americas within the past 30,000 years or so. The beginnings of agriculture and the rise of the first civilizations occurred within the past 12,000 years.
Hope this helps:)

3 0
3 years ago
Read 2 more answers
The first organisms on Earth were most like today's
mezya [45]

Answer:

O Autotrophs anaerobic

hope it will help you

3 0
3 years ago
Which factor does not play a role in runoff
vladimir1956 [14]
<span>Infiltration is the process by which rainwater becomes groundwater. In the water cycle, which involves primarily; evaporation, condensation and precipitation. Henceforth, after precipitation comes infiltration in the land areas leaving the rainwater aggregated in a single location which accumulates over time. Then this process is followed by runoff and subsurface flow by which water flows through other bodies of water, either in river, sea or ocean, even lake. Other rainwaters that has segregated and wasn’t able to transport itself stays in the process of infiltration, thus groundwater.<span>

Thus, solar radiation doesn't play a role in runoff or infiltration.
</span></span>
5 0
3 years ago
For plants living in a dry areas, explain a possible conflict between the need to obtain carbon dioxide for photosynthesis and t
ahrayia [7]

Plants living in dry areas face conflict.

EXPLANATION:

  • Since they live in dry areas they will undergo more transpiration.

  • If they open stomata during the day there will be excessive loss of water vapor that will result in their death.

  • Therefore plants living in this area open the stomata during the night to obtain Carbon dioxide.

  • This checks the loss of water through transpiration and provides the carbon dioxide for photosynthesis.

7 0
2 years ago
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