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ohaa [14]
3 years ago
6

At what stage and in what eon did the earth develop seasons?

Biology
2 answers:
melomori [17]3 years ago
7 0

Answer:

Option B, Late Precambrian eon

Explanation:

The history of geology of Earth has started somewhere around 4.6 billions ago.

Basically , it can be divided into two periods

a) the Precambrian supereon and

b) the Phanerozoic eon.

The Precambrian supereon   has 90 percent of geologic time . It has 3 eons and begins some 4.6 billion years ago and extends up to the start of Cambrian Period.

a) Hadean Eon - it is the era before the formation of rocks.

b) Archean Eon - During this eon, Archean rocks metamorphized  deep-water sediments

c) Proterozoic Eon - Rocks found in this eon revealed massive, rapid continental accretion  supercontinent cycles, and  orogenic activity

Hence, option B is correct

Svetradugi [14.3K]3 years ago
3 0

Answer:

C. Late Precambrian era

Explanation:

Eon refers to two or more geological eras forms an eon. Eon is mainly divided into four eon namely Hadean, Archean, Proterozoic and Phanerozoic. Phanerozoic includes Palaeozoic, Mesozoic and Cenozoic era. Cambrian falls under the <em>Palaeozoic era </em>which was the major turning point the evolution period of geological time scale. The sudden increase in many diversity of animal phyla was evolved during this period. Also, the first land plant was appeared in this period which gave a promising fact that plants will grow on the apt seasonal conditions.

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Upon examining samples of water and mud from a nearby river, you come across an unidentified organism. The organism is unicellul
Tasya [4]

Answer:

A protist

Explanation:

In the given question, the characteristic of an unidentified organism are given which are:

1. The organism is unicellular and autotrophic which means that it is a producer and belongs to a plant like organism.

2. The membrane bound nucleus means that the organism is an eukaryote.

The organism is thus an unicellular, autotrophic and an eukaryote could be a species of algae which is considered a protist. The protists are the organisms which shows characteristic of the ukaryotes but are not considered true plants and animals.

Thus, a protist is correct answer.

3 0
2 years ago
What organ is on the left front side at the rib cage??
S_A_V [24]
I believe its your heart if I am not mistaken hope this helps  ^^;

3 0
3 years ago
The relationship between the bacterium Xenorhabdus nematophila and its nematode host, Steinernema carpocapsae, is classified as
Cloud [144]

Answer:

The correct answer will be-cooperate

Explanation:

Nematodes or ringworms interact with the bacteria in one of three ways: mutualism, parasitism and symbiosis.

The interaction between nematode <em>Steinernema carpocapsae</em> and bacteria  <em>Xenorhabdus nematophila</em> prove to be a symbiotic relationship as both the organisms benefit each other.

The interaction between these two organisms is also known as cooperation because both the species can live without each other also. It is during the infective juvenile stage, the bacteria start living in the intestine of the nematode and benefiting the nematode. Both bacteria and nematode help each other killing the host and then utilizing the cadaver of the host.

Thus, cooperate is the correct answer.

6 0
3 years ago
Can evolution be proven false?
Afina-wow [57]
I mean there is a lot of evidence that evolution has happen but i think if someone were to say it was false they would be getting into a religious beliefs. So I would say if you are using evidence than no it cannot be proven false. Hope this helps(;
6 0
3 years ago
At the complete end of cellular respiration, how many molecules of ATP are produced
Vlad1618 [11]

Answer:

38 ATP

Explanation:

On complete oxidation of one molecule of glucose yields 38 ATP.  Break up of energy production is given below:  

  • During glycolysis 2 ATP and 2 NADH is produced.
  • During formation of Acetyl CoA, 2 NADH is produced.  
  • During Citric Acid Cycle, 2 ATP, 6 NADH, 2 FADH₂ are produced.  

Finally during Electron transport chain, reduced coenzymes NADH and FADH₂ oxidised to release ATP. Each NADH produce 3ATP and each FADH₂ produces 2 ATP. Altogether 10 NADH is produced during entire process of cellular respiration which yield 30 ATP and 2 FADH₂ yields 4 ATP. Therefore, on complete oxidation of one molecule of glucose yields 38 ATP.

7 0
3 years ago
Read 2 more answers
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