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natita [175]
3 years ago
6

Which event occurred during the Mesozoic era? A. Humans lived on Earth. B. The first plants lived on the land. C. Pangaea, the s

uper continent, began to break apart. D. Cyanobacteria begin to fill the air and water with oxygen.
Biology
1 answer:
andreev551 [17]3 years ago
4 0
<span>B. The first plants lived on the land.</span>
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A sample of well water is tested for its bacterial content in a plate count assay. A one-milliliter sample of the water is dilut
Sholpan [36]

Answer:

The original water sample contains 830,000 cells per milliliter.

Explanation:

A sample of well water is tested for its bacterial content in a plate count assay. A one-milliliter sample of the water is diluted in a 1:10 dilution series. One milliliter of the fourth dilution tube is plated in a pour plate. After incubation, the plate has 83 colonies, indicating that the original water sample contained 830,000 cells per milliliter.

6 0
3 years ago
Molecular clocks
gavmur [86]
<span>Molecular clocksC. take advantage of known mutation rates to estimate how long ago organisms shared a common ancestor.

All of the following are important properties of prokaryotes except
A. prokaryotes are used to make many products for humans.

All of the following patterns were witnessed by Darwin except that species vary
C. within very short spans of time.

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6 0
3 years ago
Read 2 more answers
Which of the following is an example of discrete data?
LekaFEV [45]

THE DOG HAS 2 BROTHER is the example of discrete data.

The dog has 2 brothers.

<u>Explanation:</u>

Discrete data is the information that can be categorized into a classification. Discrete data is based on counts. only a few finite number of value is possible.

It consists of whole number that are counted rather than measured. It can be classified  into two type, one is discrete and  other is continuous data, where the discrete is countable of the object and the continuous  is measurable one.

The dog has two brother is the example for discrete data because the number can be countable, remaining statement are continuous because they are measurable statement, it is always comes under the data continuous.

8 0
3 years ago
Why is the Earth’s core made up mainly of iron while the crust contains mostly silicate minerals?
solong [7]
B. is the answer 
i hope
3 0
3 years ago
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Type of Cell
butalik [34]

Explanation:

There would be unlimited number of sperms.

there would be 56 eggs. Hope it helps.

<h2>Please mark as BRAINLIEST</h2>
7 0
3 years ago
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