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Natasha_Volkova [10]
2 years ago
14

Will give brainliest to correct answer

Biology
1 answer:
sp2606 [1]2 years ago
7 0

Answer:

(i)

x= nucleus

y= chloroplasts

z= vacuole

(ii)

1) an animal cell does not contain a vacuole but a plant cell does

2) a plant cell contains chloroplasts but an animal cell does not

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Answer:

Elements that are found in the same horizontal row (belong to the same period) in the periodic table, e.g. Fluorine and Neon both have the same energy level of 2.

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The modern periodic table is organized into eight vertical columns known as groups and seven horizontal rows known as periods. The atomic number ( number of protons in the nucleus) of elements increases when moving across the periodic table from left to right. The horizontal rows or periods represents an energy levels or the number of electron shells in an element. Energy levels (also called electron shells) are fixed distances from the nucleus of an atom where electrons may be found. Elements belonging to the same period have the same number of energy level or shells. For example, the elements belonging to Period 2 include lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine and neon. These all have the same number of energy level of 2.

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<h3>What is continental drift?</h3>

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The discovery of glacial evidence in South America has led to a greater acceptance of the continental drift idea.

Finally, we can conclude that glacial evidence discovered in South America demonstrates how climatic change evidence supports the hypothesis of continental drift.

For more information regarding continental drift, visit:

brainly.com/question/974409

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