Air pollution and water pollution are more often regional problems than global problems. Water pollution involves the contamination of water bodies such as rivers, lakes, oceans, and groundwater; usually caused by human activities. Air pollution is the release of pollutants into the air; harmful or excessive quantities of substances such as gases, biological molecules, and particulates.
Explanation:
Helium is a colorless odorless gas. It is lighter than air. It is nonflammable and is only slightly soluble in water. It is chemically inert.
Answer:
The answer is Polyculture.
Explanation:
It is a form of agriculture where more than one types of crops and animals are grown at the same place ,imitating the diversity of the natural ecosystem.
This practice is very advantageous because it helps in pest, weeds and disease with minimal chemical input.
Proteins which form channels may be utilized to enable the transport of water and other hydrophilic molecules; these channels are often gated to regulate transport rate. In facilitated transport, hydrophilic molecules bind to a "carrier" protein; this is a form of passive transport
