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zysi [14]
1 year ago
7

Before a star is born, the matter that will become the star exists as a what?

Biology
1 answer:
Svetach [21]1 year ago
5 0

Answer:

A: Cool, Dark Nebula

Explanation:

Before a star is born, the matter that will become the star exists as a interstellar gas and dust.  The stars are formed as a result of the force of gravity compresses atoms in the interstellar gas. Then the fusion reaction begins. During this fusion reaction the temperature gets extremely high and all the material evolves into a hot bright star.

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What organelles are found in an animal cell
viva [34]

Answer:

Structurally, plant and animal cells are very similar because they are both eukaryotic cells. They both contain membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum, golgi apparatus, lysosomes, and peroxisomes. Both also contain similar membranes, cytosol, and cytoskeletal elements.

Explanation:

3 0
3 years ago
a botanist hypothesizes that as flowers evolved tubular corollas, their nectar attracted a particular species of long-tongued fl
Ivenika [448]

One who researches 'botany' is called a 'botanist'. Botany is one of the world's oldest natural sciences. initially, Botany protected all plant-like organisms inclusive of algae, lichens, ferns, fungi, and mosses in conjunction with actual flowers.

Darwin understood the centrality of development in a deep and profoundly vital manner, both for animals and for flora. His notebooks document his cautious studying and interest in animal embryology and plant leaf and floral organ morphogenesis.

Butterfly-pollinated plants usually have pretty flashy flowers in hues like crimson and purple. these plants do not have the quantity of pollen that bee-attracting flowers do, however they've huge components of nectar to feed the butterflies.

Learn more about botanists here

brainly.com/question/19712716

#SPJ4

7 0
1 year ago
What is the difference between bracketed key and indented key?​
____ [38]

Answer:

<em>Bracketed and indented keys are two dichotomous/or branching keys with an ordered, numbered couplet, and spatially differentiated respectively.</em>

Explanation:

Dichotomous keys are used in the identification and classification of taxa.

Bracketed keys, or parallel keys, are easy to understand- for efficiency, these keep the first two entries of every couplet or pair being compared. It also makes use of a numbering system in the couplet choices for easy tracking.

Indented keys maintain an equal distance from the margin on the left of the pages. Successive couplets are indented til the taxon is identified.

5 0
3 years ago
What happens during transcription? Select all that apply. please help asap!
dangina [55]

Option A and C are correct.

<h3><u>Explanation:</u></h3>

The DNA is the genetic molecule of a cell in an organism that contains the genetic information stored in forms of genes. The genes are expressed by means of protein synthesis. The genes are formed of particular sequence of nitrogen bases that is called as codon. These codons are transcribed into particular amino acids. This process involves the participation of DNA dependent RNA synthase that produces the mRNA from the portion of DNA by means of transcription. The mRNA that is produced from the DNA is formed of complementary nitrogen bases from the DNA, just exception is that in RNA, thymine is replaced by Uracil. This process is known ad transcription.

5 0
3 years ago
By age 65, what percentage of adults are grandparents? 75 80 85 90
frutty [35]
85% of adults are grandparents by age 65. This estimation has been made in the U.S. from the surveying of the elderly. So, the correct choice is the third option: 85. 

Let me know if you need further info. :)

                - Dotz
7 0
3 years ago
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