How do human activities have damaged the greenhouse effect?

Explanation:

Greenhouse effect is a natural phenomena. The solar radiations from the sun enters the earth atmosphere where some of the sun light is absorbed by the atmosphere as well as the terrestrial land. The rest energy is reflected back to the space. This helps in maintaining the balance of thermal energy on earth. Human activities like burning of fossil fuels, land clearing and agriculture are increasing the amount of greenhouse gases released into the atmosphere.  These gases are responsible for absorbing the thermal energy present in the sunlight. Hence, can be responsible for increasing the global temperature worldwide. This is called as greenhouse effect.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.