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Agata [3.3K]
3 years ago
11

What is the main fuel of a main sequence Star

Biology
1 answer:
NikAS [45]3 years ago
8 0
If we're asking for elements, it's helium and hydrogen.
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3 advantages and disadvantages of the natural ecosystem<br>​
Andrei [34K]

Answer:

Urbanization has environmental and economic advantages for humans, but also substantial disadvantages, including increased problems with physical and mental health/stress, a modified climate, water and energy management, and air pollution.

7 0
3 years ago
Can you determine which instances reflect a valid experiment or conclusion? Check only those that are valid.
Orlov [11]

Answer:

Only options A (first one) reflects the instances with valid experiment or conclusion.

Quality of any experiment depends upon two things reliability and validity. Reliability is measure of regeneration of results every time an experiment is performed under specific conditions.

Validity is measure of accuracy of results of an experiment. It can be check by two ways: internal validity (checks the design of the experiment) and external validity (checks if the conclusion is the real explanation of the phenomenon).

Now, in marine biologist experiment, he concluded the results only after one breeding season. This makes his results unreliable as it might have happened by chance.

Similarly, in cola experiment the taste was only checked by one candidate i.e. Karl. He might have problem in his taste buds. In addition, the temperature of cola can also affects its taste which is not taken care of in the experiment. Hence, it is not the valid experiment.

Similarly. Jeanette could use more plants for her experiment and Robert just followed only one instruction. He didn't perform any experiment.

<h2>* BRAINLIEST WOULD BE V APRECIATED :) </h2>

4 0
4 years ago
plant and animal mitosis are very similar except for cytokinesis. explain how this process is different.
Maksim231197 [3]

Answer:

Cell division or cytokinesis in mitosis or meiosis is very similar... There is a region of division to separate the two daughter cells in both processes; however, the division plate is slightly different between animal cells and plant cells. In animals, the region of division is a division plate. hope this helps! :)

3 0
3 years ago
What do DNA and RNA code for?
sp2606 [1]

Answer:

The genome of an organism is inscribed in DNA, or in some viruses RNA. The portion of the genome that codes for a protein or an RNA is referred to as a gene. Those genes that code for proteins are composed of tri-nucleotide units called codons, each coding for a single amino acid.

Explanation:

6 0
3 years ago
What is/are goals and functions of a negative feedback system?
Svet_ta [14]

Providing long-term control over the body's internal conditions

Keeping conditions within a normal range

Adjusting the "set point" for body temperature based upon level of activity


6 0
4 years ago
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