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Leokris [45]
3 years ago
14

The layers of earth are based on what two sets of characteristics?

Biology
1 answer:
katovenus [111]3 years ago
7 0
Chemical composition and physical properties
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In normal humans, sex cells contain the _________ number of chromosomes.
Nadya [2.5K]

Answer: Haploid number

In normal humans, sex cells contain the diploid number of chromosomes

Explanation;

Human somatic cells or body cells are diploid such that they contain two sets of 23 chromosomes which gives a total of 23 chromosomes. Examples of somatic cells in the body that are diploid include, epithelial cells, somatic cells, liver cells, blood cells, nerve cells, etc.

However, mature sex cells are haploid, which means they have one set of 23 chromosomes which means they have 23 chromosomes. Sex cells are the results of meiosis type of cell division in which a diploid cell divides to form four daughter cells that are haploid.

3 0
3 years ago
Limiting factors determine an area’s carrying capacity because
Degger [83]

Answer:

Animals need resources to survive.

Explanation:

With a lack of enough resources for various animals, it generates competition for resources and eventually animals will start to starve and die off.

6 0
3 years ago
Which type of mutation always creates a stop codon
AlekseyPX
A Nonsense mutation. It changes a codon coding for an amino acid to a codon coding for the signal to stop or terminate translation
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Why is important for scientists to use scientific names and not common names?
klemol [59]
It is important for scientists to use scientific names and not common names because common names can be easily misunderstood as something else. For example, a scientist during an expeirement will use scientific names because if they used a common name of a certain thing and it be mistaken for something that it wasn't the entire expeirement would be ruined or someone could get hurt.
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3 years ago
A secondary source might be eliminated by a good researcher because
kiruha [24]
Because good researchers rely on first hand account or better said primary evidence. The reason why they rely on primary evidence is because it is usually the most reliable. Much more so than secondary or even tertiary evidence. This enables them to understand the history of a certain topic better. 
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