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lina2011 [118]
3 years ago
6

The long time lag between the origin of life and the appearance of multicellular life was probably partly due to the lack of ___

____ in the atmosphere for much of earth's existence.
Biology
1 answer:
pogonyaev3 years ago
3 0
Could you provide the Answer choices
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PLEASE HELPP ME !!!!!!!!!!
pentagon [3]
1. A
2. E
3. C
4. B
5. F
6. G
7. D
7 0
3 years ago
What happens to rainwater that falls on land?
Serga [27]
Well there are three reasons
it drains into rivers, streams, etc. or
 it seeps into soil and gather underground as ground-water
or
falls into high mountains and freeze and in the summer it will melt and flows into the rivers
4 0
3 years ago
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A positive Benedict’s test indicates the presence of a
Ganezh [65]
The presence of glucose in urine symptom of dietaboietes <span />
7 0
3 years ago
Which mutation is harmful to the organism? A. a mutation allowing moths to camouflage better on blackened tree bark B. a mutatio
Juli2301 [7.4K]

Answer:

The correct answer is D.

Explanation:

Mutation refers to an alteration in the nucleotide sequence of the genome found in an individual. Mutation can be beneficial, harmful or neutral. A mutation is said to be beneficial when its effects add positively to the survival of the organism. On the other hand, a mutation is described as harmful if the effects is negative or neutral if it has no negative or positive effects.

From the options given in this question, you will notice that all of them have beneficial effects with the exception of option D. A mutation that cause uncontrolled cell division is harmful and can lead to cancer.

3 0
3 years ago
Suppose that an igneous rock with an intermediate chemical composition was partially melted before it resolidified. Which of the
Elenna [48]

Answer:

Mafic -- the formation of the minerals begins anew upon melting.

Explanation:

Mafic minerals set at increased temperatures, which is there in Bowen's Reaction Series. Therefore, rocks collected of mafic minerals are designed at increased temperatures. They are originated in sites deep within the earth and also in tectonic dispersal environments, like the seafloor. Mafic magmas are generally formed at dispersal centers, and signify material which is recently distinguished from the greater mantle. Mutual mafic rocks comprise basalt and gabbro. Mafic rock, in geology, igneous rock that is subjugated by the silicates pyroxene, amphibole, olivine, and mica. These minerals are high in magnesium and ferric oxides, and their presence gives mafic rock its characteristic dark colour.

3 0
3 years ago
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