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Anestetic [448]
4 years ago
8

How is the growth of land plants proof that there is carbon in the atmosphere? How does carbon exist in the atmosphere, biospher

e, and geosphere all at the same time? (Site 1 )
Biology
1 answer:
aalyn [17]4 years ago
6 0

Plants take the CO2 from the atmosphere which is used in Calvin's cycle to synthesize organic compounds that end up building the plant. This fact can be proved by marking the atmospheric CO2 with radioactive isotopes of carbon, afterwards using a Geiger counter the plant will present radioactivity.

The carbon in the atmosphere is most commonly found in the form of CO2

it has a concentration of 0.04%.CO2 is a byproduct of aerobic respiration

or combustion, for example, C6H12O6+6O2-->6CO2+6H2O. The CO2 is then used by plants in photosynthesis as mentioned earlier.

Carbon is present in the biosphere because all life is made of carbon.

Carbon is present in the geosphere most commonly under the form of hydrocarbons like methane(CH4). The carbon present in geosphere is a result of organisms decay and metabolic byproducts. For example, methanogen bacteria synthesize methane in anaerobic conditions reducing hydrogen in the presence of CO2(CO2+4H2⇒CH4+2H2O). Carbon in the geosphere can also be found in coal that becomes diamond under extreme pressure and temperature.

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3 years ago
What is cotransport? Explain how understanding it is used in our treatment of diarrhea.​
qaws [65]

Answer:

In cotransport, a single ATP-powered pump that transports a specific solute drives the active transport of several other  solutes. Normally, sodium in waste is reabsorbed in the colon, maintaining constant levels in the body, but diarrhea  expels waste so rapidly that re-absorption is not possible, and sodium levels fall precipitously. To treat this life threatening condition, patients are given a solution to drink containing high concentrations of salt and glucose. The  solutes are taken up by sodium-glucose cotransporters on the surface of intestinal cells and passed through the cells into  the blood. This simple treatment has lowered infant mortality worldwide.

6 0
4 years ago
Sled dogs have a thick coat of hair that helps them withstand the cold temperatures of the arctic. Compare that adaption to a si
Svetradugi [14.3K]

Answer;

Population; physiological modifications at the individual level.

The adaptation of the sled dog best describes adaptation at the population level while the dog exposed to seasonal colder temperatures has physiological modifications at the individual level.

Explanation;

-The bodies of sled dogs are covered with two coats of hair that work together to provide a double layer of warmth. The under layer is very short and the dog sheds it in the spring to keep from overheating during warmer temperatures.

-During the colder winter months, this under layer works as an insulator against the dog's skin to keep his body warm and his core body temperature consistent. This adaptation best describes adaptation at the population level while the dog exposed to seasonal colder temperatures has physiological modifications at the individual level.

6 0
3 years ago
A population of lizards lives in an isolated area where local rocks contain a high concentration of radioactive elements. A stud
Tems11 [23]
B.

The radiation present is likely to cause genetic mutations. 
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4 years ago
What are the five parts of skill related fitness. Please select all 5 below. Question 1 options: Speed Muscular Strength Coordin
Goryan [66]

Answer:

There are only four parts of skill related fitness in the options; they are:

Speed

Agility

Balance

Coordination

Explanation:

Physical fitness refers to the ability to perform physical activities well without fatigue. In other words, being physically fit refers to a state of general wellbeing. Physical fitness can either be health-related or skill-related. The skill-related components are six in number viz: agility, power, balance, coordination, speed and reaction time.

However, only four of these skill-related parts of physical fitness are mentioned in the options of this question. They are:

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- Agility: This is the ability to move easily and quickly in different directions

- Balance: The ability to maintain an upright body position during training or physical activity

- Coordination: The ability to make physical senses of one's body (eye) cooperate with the limbs (hands and feets) during a physical activity.

Note that, Aerobic Endurance and Muscular strength are health-related components of fitness

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4 years ago
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