Answer:
Proteins are generally way too big to be able to fit through a cell membrane.
Explanation:
They cannot compress their molecules to pass through.
Keystone species, they kinda hold the food webs together
Answer:
Since the origin of humans on this planet, they have been trying their best to make their lives easier on this planet. In doing so, human activities have some how heavily damaged the Earth. Many day to day activities of humans are dangerous for the Earth.
Some of the consequences of human activities on the Earth's fresh water are :
Extinction of many aquatic species:
The water consumed by humans comes from the fresh water oceans. As the population of humans is increasing enormously, the water from the oceans is being consumed at dangerous levels. This has caused many species of aquatic animals to become extinct or to be at a verge of extinction as they do not have a habitat to survive or reproduce.
Pollution:
Many heavy industries, house sewage, farmers dispose waste into the fresh water. Hence, killing aquatic animals and polluting the fresh water ecosystems.
Ghtly acidic rainwater dissolves the limestone bedrock creating caverns and sinkholes
<span>the high water table in much of the state effectictively floods most of them </span>
<span>people use them to find ice age fossils as many animals got trapped in the sinkholes</span>
The processes and their reactions are discussed below.
<h3><u>
Explanation</u>:</h3>
<u>Carbon dioxide</u>:
In case of plants the carbon dioxide is needed to produce glucose in the process of photosynthesis. This step is very crucial for the survival of each and every organisms in the living world. The energy for this process of photosynthesis is found from sun's rays.
In case of humans, carbon dioxide is produced through respiration. This produces energy that helps the organism to sustain living.
Oxygen:
It is produced by plants from photosynthesis through splitting of water. The energy for this process comes from Sun's energy.
In case of animals, the oxygen is needed for respiration. This is required to accept the electron in the last step of aerobic respiration. This produces the energy that helps to sustain the living.
Water:
Both plants and animals require the water for performing their metabolic works. The water is obtained by plants from soil through roots and conducted to leaves by vascular tissues xylem. Similarly the animals obtain water from drinking. They need the water to perform digestion, and each and every metabolic process.
Glucose:
Glucose is produced by plants from photosynthesis. It is produced absorbing the energy of Sun's rays.
In case of animals, the animals obtain glucose from food and they digest the glucose through respiration and produce energy that helps them to sustain life.
