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Tanzania [10]
4 years ago
11

Long ago, scientists did not know that cells existed because

Biology
2 answers:
mina [271]4 years ago
8 0
The best answer id go for is B. they were too busy studying plants
 
Viktor [21]4 years ago
4 0
A) Microscopes weren't invented yet :)
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Over time, rain and weathering causes rocks to release phosphate ions and other materials.  This inorganic phosphate is then distributed into the soil and water.  plants take up inorganic phosphate from the soil.  the plants may then be consumed by animals. Once in the plants or animal, the phosphate is incorporated into organic materials that break down organic matter to inorganic forms of phosphate.  this process is known as mineralisation.  Phosphate in soil can end up in waterways and eventually oceans.  once there, It can be incorporated into sediments over time.
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Why do malleable and ductile physical properties help make minerals useful? Pls answer with a simple/easy to understand answer
vodomira [7]

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Malleable and ductile properties indeed help minerals useful. Both properties are useful because they help in transforming the shapes of minerals. Malleability is a useful property since it can be flattened or pounded by a hammer. Also, the ductile property makes it possible for the minerals to be stretched in the form of a wire. These two properties makes it useful for minerals.

Explanation:

Malleable and ductile properties indeed help minerals useful.

Both properties help in transforming the shapes of minerals.

Malleability is a useful property since it can be flattened or pounded by a hammer.

The ductile property makes it possible for the minerals to be stretched in the form of a wire.

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3 years ago
Explain why it makes sense that sperm and egg cells have 1/2 the amount of chromosomes than a normal cell that is not involved i
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The sperm and egg have 1/2 the amount because when the sperm fertilizes the egg, it equals out to the regular amount of chromosomes. That is why we have half chromosomes from our dad and half chromosomes from our mom, equaling out to normal amount of chromosomes.

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4 years ago
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