The statement 'photosynthesis and cellular respiration are opposite reactions' best describes the relationship between photosynthesis and cellular respiration.
<h3>What is cellular respiration?</h3>
Cellular respiration is a chemical process where foods and oxygen are used to generate ATP in aerobic conditions.
Conversely, photosynthesis is a chemical process where light and carbon dioxide are used to generate chemical energy.
In conclusion, the statement 'photosynthesis and cellular respiration are opposite reactions' best describes the relationship between photosynthesis and cellular respiration.
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A hypothesis is an assumption made before an experiment while a theory is made after collecting a lot of scientific evidence.
Answer : The correct option is, (4) one; five
Explanation :
Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.
In the Lewis-dot structure the valance electrons are shown by 'dot'.
The representation of valence electrons of an atom by dots around the symbol of an element is said to be the Lewis-dot symbol.
In the representation of Lewis-symbol, one electron dot must put on each side of the element symbol then paired the electrons.
As per information, element A has 1 valence electron and element B has 5 valence electrons.
Thus, the valency of A is one and B is five.
Answer:
The theory follow a microscopic description of chemical behavior.
Explanation:
The volume decrease is a macroscopic observation that can be explained by a microscopic event.
The molecules that make the gas are invisible to the human eye, however, the way they behave are the reason for different properties of the gas. It is easy to understand this if we think about the gas molecules as moving balls in a box. If we take the same amount of balls to a smaller box (decreasing the volume), the balls will hit the walls of the box easier (increasing the pressure).
Answer:
<em>Troposphere, stratosphere, mesosphere, and thermosphere.</em>
Explanation:
<em>Troposphere - </em><em>It is the lowest region of the atmosphere, extending from the earth's surface to a height of about 3.7–6.2 miles (6–10 km), which is the lower boundary of the stratosphere.</em>
<em>Stratosphere - I</em><em>t is the layer of the earth's atmosphere above the troposphere, extending to about 32 miles (50 km) above the earth's surface (the lower boundary of the mesosphere).</em>
<em>Mesosphere - </em><em>It is the region of the earth's atmosphere above the stratosphere and below the thermosphere, between about 30 and 50 miles (50 and 80 km) in altitude.</em>
<em>Thermosphere - </em><em>It is the region of the atmosphere above the mesosphere and below the height at which the atmosphere ceases to have the properties of a continuous medium. The thermosphere is characterized throughout by an increase in temperature with height.</em>