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AfilCa [17]
3 years ago
6

Seasonal changes occur because of

Biology
2 answers:
Mnenie [13.5K]3 years ago
8 0
Seasonal changes occur because of earth's tilt
erastova [34]3 years ago
6 0

Answer: The Earth's tilt.

Explanation:

The reason why the Earth has seasons is because our planet’s axis of rotation is tilted at an angle of 23.5 degrees relative to our orbital plane. This tilt in the axis is called obliquity.

During a yeartime, there is no variation in the angle of tilt. However, the orientation of Earth’s tilt with respect to the sun changes as we orbit the sun. This change causes the different seasons.

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The elements are arranged on the periodic table based on what atomic characteristic?
SOVA2 [1]

Answer:

Elements are listed in numerical order by <u>atomic number.</u>

8 0
2 years ago
What causes the weight of an object to change depending on if it is on Earth or the Moon? the change in mass the distance from t
oksian1 [2.3K]
Mass<span> is the actual amount of material contained in a body and is measured in kg, gm, etc. Whereas </span>weight<span> is the force exerted by the gravity on that object mg. Note that </span>mass<span> is independent of everything but </span>weight<span> is </span>different<span> on the earth, moon, etc.</span>
7 0
3 years ago
Why is 2 the correct answer to number 16 ? Explain why please and answer this !!
marta [7]

an egg cell has a haploid nucleus so it has half the number of dna because it fuses with a sperm cell to have the full amount of dna.

an egg cell has 23 chromosomes and a sperm cell has 23 chromosomes.

they both have half the amount of dna to form a zygote

5 0
2 years ago
Check your understanding. Which items did you
s2008m [1.1K]

RNA nucleotides form complimentary base pairs with DNA bases.  Hydrogen and sugar-phosphate bonds form and the mRNA is synthesized.

Explanation:

The process of mRNA formed by DNA is called transcription. The genes coding for the protein is present on DNA as a nitrogenous base or nucleotides.

Transcription takes place inside the nucleus with the assistance of major enzyme RNA polymerase. In transcription 5'to3' single strand of RNA is synthesized which is complementary to the 3'to5' strand of DNA. The sequence of DNA has promoter sites which will be recognized and DNA will unzip to form transcription bubble. Several transcription factors and enzyme will be required to synthesize mRNA.

This mRNA after some modification would become primary transcript and pass on to the cytoplasm where protein synthesis will take place.

8 0
3 years ago
A scientist injected some cells with a drug that blocked glycolysis after NADH was formed, but before ATP and pyruvate were form
Stels [109]

Answer:

The cell could not make ATP.

Explanation:

Glycolysis may be defined as the process in which a glucose molecule is broken down into the two molecules of the pyruvate. Pyruvate is used to produce energy through various pathways that depends upon the availability of the oxygen. However when the glycolysis in blocked and the pyruvate is not formed, then the cells would not be able to use either the fermentation or aerobic respiration or the perform citric acid cycle. So the cell does not make any ATP.

5 0
3 years ago
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