Answer:
true
Explanation:
Plants appear green because they contain a pigment called chlorophyll. Chlorophyll absorbs lights; however, the green light is not absorbed but reflected, making the plant appear green.
The total amount of sea ice showed a decline from 2012 to 2019. The correct option would be D.
<h3>Graphical illustration</h3>
Looking at the graph, from February to June 2012, there is a decline in the amount of sea ice.
A similar decline in the amount of sea ice can be observed in the year 2019.
However, the sea ice levels for the various months in 2012 remain generally above the sea ice levels in the various months in 2019.
Thus, overall, one can say there is a general decline in the ice level from 2012 to 2019.
More on graphical illustrations can be found here: brainly.com/question/21376268
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Testes now to get this to twenty letters
Answer:
Approximately 338
Explanation:
Since each generation of the insect is approximately 1.5 times that of the previous generation. Therefore,
Population of insect in the first generation = 100
Population of insect in the second generation = 1.5 × 100
= 150
Population of insect in the third generation = 1.5 × 150
= 225
Population of insect in the fourth generation = 1.5 × 225
= 337.5
The population of insect in the fourth generation is approximately 338.
This question seem to be incomplete... Here is the full question
What causes the respiratory center in the medulla oblongata of the brain to increase the rate of respirations?
Answer:
decreased amount of oxygen or increased amounts of carbon dioxide in the blood
Explanation:
The medulla oblongata and the pons are involved in the regulation of the ventilatory pattern of respiration.
The decrease in blood pH result from the decreased amount of oxygen, Hypoxemia refers to insufficient oxygen in the blood. Thus any cause that influences the rate or volume of air entering the lungs (ventilation) or any cause that influences the transfer of air from the lungs to the blood may cause hypoxemia.
In response to a decrease in blood pH, the respiratory center (in the medulla ) sends nervous impulses to the external intercostal muscles and the diaphragm, to increase the breathing rate and the volume of the lungs during inhalation.
Also, Let take a look at a situation of an individual suffering from an anxiety attack(i.e hyperventilating). The increased ventilation rate will remove too much carbon dioxide from their body, (this implies that there is increased amounts of carbon dioxide in the blood). Without that carbon dioxide, there will be less carbonic acid in blood, so the concentration of hydrogen ions decreases and the pH of the blood rises.
In response, the respiratory chemoreceptors detect this change, and send a signal to the medulla, which signals the respiratory muscles to decrease the ventilation rate so carbon dioxide levels and pH can return to normal levels.
