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Zanzabum
3 years ago
10

Science questions (30 pts)

Biology
1 answer:
Alex Ar [27]3 years ago
4 0
The first one is solids since they have no kinetic energy

The second one is chemical since the change of colors shows that there is about to be a chemical change

The third one is C

The Endothermic process definitely fits melting

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A student does an experiment for a science fair to study whether temperature affects the timing of a cricket’s chirps. The stude
Galina-37 [17]

Answer:The timing of the cricket's depends on the temperature of the box

so the answer should be

timing of the cricket's chirps

Explanation:Hi!

There are a few types of variables in these types of experiments. They are independent, dependent, and controlled.

The independent is the one changed by the scientist, or in this case, the temperature. The controlled is the things that remain constant through every case, and the dependent is what is being observed, seeing if it changes through the altercation of the independent variable.

In this case, what is being observed is the timing of a cricket's chirps, because it is being watched whether or not temperature affects it.

Therefore, your answer is the third choice, or the timing of the cricket's chirps.

Hope this helped!

4 0
3 years ago
Read 2 more answers
A comet tails always points?
il63 [147K]
A comet always points in the opposite direction of the comet hence why it’s called the tail
3 0
2 years ago
hen reproducing, Robins (a species of bird) typically lay four eggs. Laying more eggs might result in malnourished chicks and la
Anika [276]

Answer:

In favourable environments you might find birds laying more eggs, and a greater likelihood of multiple successful clutches. There are also birds like Bald Eagles, that start mating in early January and can lay eggs before Spring officially comes. 13. Food Availability. The amount of food available has an affect on bird mating cycles.

Explanation:

3 0
3 years ago
Which chromosomes represents an alteration known as a deletion
docker41 [41]

Answer:

well it would have to be out of your 23 pairs, but which ever it is will have an entire section of the chromosome missing, hence the name deletion.

Explanation:

4 0
3 years ago
Repressors are transcription factors that bind to _____________sequences in dna
Trava [24]

Answer:

The given blank can be filled with operator.

Explanation:

The proteins that assist in turning on or turning off the function of a specific gene by getting combined with certain sections of the DNA are known as transcription factors. The transcription factors that activate the transcription of a specific gene are known as activators, while that prevents transcription and is termed as repressors.  

A repressor can be an RNA or a DNA binding protein, which prevents the articulation of genes by getting combined with the operator. A repressor, which binds with DNA prevents RNA polymerase from getting combined with the promoter, which further inhibits the transcription of the genes into mRNA.  

6 0
3 years ago
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