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fgiga [73]
3 years ago
11

An elements oxidation number is the number of ___ it will gain or lose in a chemical reaction

Biology
2 answers:
Ilya [14]3 years ago
7 0

Explanation:

a.electrons...........

Sever21 [200]3 years ago
5 0

an elements oxidation number is the number of ___ it will gain or lose in a chemical reaction

<u>a- electrons</u>

<u></u>

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Why are scientific modles used for? Give an example of each of the following modles: idea, Physical, Computer
Vinil7 [7]

Answer:

Scientific models are used to explain and predict the behaviour of real objects or systems and are used in a variety of scientific disciplines, ranging from physics and chemistry to ecology and the Earth sciences.

Explanation:

hope this helps!! vote me brailyest plzzz and have a great day!! :D

8 0
2 years ago
Based on the number of offspring they produce at one time organisms are classified into two categories many offspring at once an
Shtirlitz [24]

Full question:

Drag each label to the correct location on the chart. Based on the number of offsprings they produce at one time, organisms are classified into two categories many offsprings at once and a few at a time. Sort the characteristics based on the category they describe.

A.Low percentage of offspring reach adulthood,

B.limited parental involvement,

C.High percentage of offspring reach adulthood,

D.Rapid maturation,

E.Parental care observed,

few offspring at once vs many offspring at once.

Answer:

At the same time, there are a few offspring

C. A high proportion of offspring grow up to be adults.

E. Observed parental care,

At the same time, many offspring

A. Only a small fraction of offspring grow up to be adults.

B. minimal parental participation;

D. Rapid maturation.

Few offspring at a time have a high percentage of offspring reaching adulthood. If a large percentage of offspring reach adulthood, the offspring are likely to be few and well cared for.

<h3>What is parental care?</h3>

Parental care is seen to be unique to only a few offspring at a time. If the parents provide good care to their children, the offspring are likely to be few. It will be easier for the parent organism to care for a small number of children at once.

Many offspring at once have a low percentage of offspring reaching adulthood. Because there are so many kids at once, competition for room and food, as well as a lack of care, only a small percentage of them will reach adulthood.

Many offspring have limited parental participation at the same time. Because there were so many kids at the same time, the competition for parental care among the offspring would be strong. The parents' organism will be unable to care for the large number of children.

Rapid maturation is unique to several offspring at the same time. In order to survive, the organism will have to mature quickly. Due to the large number of children, survival will be determined by the fittest. The ability of the children to mature quickly will be aided by the survival of the fittest trait.

For more information regarding adulthood, visit:

brainly.com/question/938949

#SPJ1

5 0
2 years ago
Why does the rate of heart beat increases during exercise?
kherson [118]

During exercises, our muscles needed energy for contractions. The heart pumps more rapidly and more powerfully during this time for a few reasons.


First, more oxygen and nutrients like glucose can be transported to the heart. Muscle cells uses oxygen and glucose for aerobic respiration to generate energy.


Secondly, more carbon dioxide and waste can be transported away from the muscles. Waste products from aerobic respiration includes carbon dioxide or water etc. The faster the heart pumps, the faster the blood gets transported so more waste can be carried away.


Thirdly, lactic acid can be carried away too. When oxygen supply is not enough, the cells undergo anaerobic respiration to generate energy. This type of respiration does not require oxygen, but a waste product called lactic acid is produced. Lactic acid must be carried away from cells because they're harmful. Therefore, the faster the heart pumps, the more lactic acid gets carried away.


Last but not least, heat can be carried away too. Part of the energy generated is turned into heat. Therefore, in order to help us cool down, blood travels fast to carry heat away from the heat generating muscle cells.

5 0
3 years ago
Read 2 more answers
movement of cell against concentration gradient is called a. osmosis b. active transport c. diffusion d. passive transport
Advocard [28]
Movement of cell against concentration gradient is called a.osmosis
5 0
3 years ago
The chart shows the advantages and the disadvantages of using DNA technology. Advantages Disadvantages Allergies Unknown effects
zepelin [54]

Answer:

The correct answer would be allergies.

Allergies is one of the common disadvantages of recombinant DNA technology.

It has been observed that use of genetically modified crops can cause life-threatening allergies.

The possible reason is that the introduction of new genes in the crops may lead to the formation of new proteins our body has never encountered with. These proteins may have a potential to cause allergies or any other life-threatening diseases or complications.

7 0
3 years ago
Read 2 more answers
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