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Virty [35]
3 years ago
9

Identify features that allow reptiles to live on land succesfuly

Biology
1 answer:
Lina20 [59]3 years ago
6 0
Scales provide protection, they have lungs for breathing air, internal reproduction allows them to reproduce on land.
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Why are hurricanes common in Florida?
mrs_skeptik [129]
The oceans near cause hurricanes
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3 years ago
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Natural Bridge Cavern was formed by water that seeped into the soft limestone in central Texas. What is this process called?
Mamont248 [21]

Answer:

Chemical weathering

Explanation:

Chemical weathering is the process when rain chemicals react with rocks and minerals. In this process, the rocks are weakened. This chemical happening provokes the chemical reaction in the rock or in the mineral.

Chemical weathering is a spontaneous process and it leads to a more stable state for natural materials under a given set of conditions.

7 0
3 years ago
Between 1957 and 1961, thousands of expectant women in 30 different nations ingested a common antinausea drug of the time known
Elza [17]

Answer:

A study of <u>those newborn babies</u>

Explanation:  

Studying the infants from these pregnant women lead the researchers to find out that this drug interfered with the process of limb formation if the pregnant woman had taken this drug anytime during the 26 days critical for limb formation and development. In this way, it makes for an instance where nurture had disrupted nature.

7 0
3 years ago
Boris Magasanik collected data on the proportion of each base in RNA from different species. To compare the relative amount of e
just olya [345]

Answer:

The nucleic acid is a macromolecule present in living systems in the form of either DNA or RNA, whose molecule consists of many nucleotides which are linked with each other to form long chains. The presence of DNA or RNA in an individual promotes continuity of life. The variability and complexity of nucleic acid are dependent on its constituent molecules as, sugar, a phosphate group, and a nitrogenous base. However, two monocyclic nitrogenous bases were classified purines (adenine:A, guanine:G) and pyrimidines (thymine:T, cytosine:C, and uracil:U).

In addition, RNA is a single-stranded structure which differs from DNA in two aspects, the sugar content of RNA is ribose, and pyrimidine base uracil replaces the thymine base of DNA. A ratio between two strands of DNA can be calculated by using Chargrff's rule which states that "DNA from any cell of all organisms possess a 1:1 ratio (base Pair Rule) of pyrimidine and purine bases'.

The purine to pyrimidine ratio in RNA with different bases is given below in the following table:

Presence of single strand in RNA does not follow chargaff's rule and alters the purine: pyrimidine ratio. The above ratio of each base in the given information is not equal, due to which the ratio of purines to pyrimidines is different. The ratio of DNA and RNA is not equal because DNA has its complementary DNA strand. However, bases in RNA might vary due to its single-strandedness property, but its ratio is dependent on the species.

Therefore, it can be concluded that the ratio of purines to pyrimidines is dependent on the species due to its genetic makeup. Hence, option (c) is correct.

7 0
3 years ago
Can a person’s genotype be determined by their phenotype? Why or why not?
julsineya [31]

Answer:

No, a person's genotype cannot be determined solely by their phenotype as many genes in our genome do not get expressed.

Explanation:

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3 years ago
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