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Lena [83]
3 years ago
8

What a properly controlled experiment

Biology
1 answer:
Vlad [161]3 years ago
3 0

Answer:

A controlled experiment is simply an experiment in which all factors are held constant except for one: the independent variable. A common type of controlled experiment compares a control group against an experimental group. All variables are identical between the two groups except for the factor being tested.

Explanation:

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Which is NOT true of cancer cells? A) Cancer cells fail to undergo apoptosis. B) Cancer cells exit the cell cycle and enter the
Angelina_Jolie [31]

The answer is; B

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7 0
4 years ago
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Which example describes animals living in a social hierarchy? Check all that apply.
Vinvika [58]

Answer:

A worker bee defends the hive while the queen bee lays eggs

A prairie dog barks to alert family members when it spots a predator

Explanation:

Just like people, some animals live in communities, where each of them plays a certain role. For those animals, we can say that they live in a social hierarchy.

Examples that describe something like this are the second and fourth ones.

In a hive, there are different types of bees: workers, drones, and a queen. Each of them plays their role, which makes their hive function properly.

Prairie dogs are another example of species that live in large communities. Since they are small and have numerous predators, they rely on each other for protection. They do this by barking whenever they spot a predator, this way alerting other members of their community.

The rest of the statements simply tell about how some species live without mentioning their social life. This is why they are incorrect.

5 0
3 years ago
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Mengapakah jisim udara tidak diukur dengan neraca tuas<br>​
ra1l [238]

Answer:

Ia tidak mempunyai badan fizikal.

Penjelasan:

Jisim udara tidak diukur oleh keseimbangan tuas atau keseimbangan berat yang lain kerana mustahil untuk mengukur jisim udara. Hanya dua sifat udara yang dapat diukur seperti kadar aliran dan tekanan. Imbangan tuas mengukur berat bahan-bahan yang mempunyai badan fizikal sehingga sebab itu jisim udara tidak dapat diukur kerana tidak mempunyai badan fizikal. Udara mempunyai jisim tetapi tidak mempunyai badan fizikal sehingga mustahil untuk mengukur beratnya.

6 0
4 years ago
Why didnt Andrew Jackson win the Election of 1824 A.) he had fewer electoral votes than John B.) he was betrayed by John C.) he
Bess [88]
B is the correct answer I think
3 0
3 years ago
A cornea transplant involves the grafting of a donor cornea. true or false
Leto [7]

Answer:

A cornea transplant involves the grafting of a donor cornea into a recipient's anterior eye. The sutures to hold the graft in place must stay in place for a long period of time because the cornea is slow to heal. ... The fibrous layer includes the tough sclera (the "white" of the eye) as well as the transparent cornea. so TRUE

Explanation:

3 0
4 years ago
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