B positive patients can receive blood from B positive, B negative, O positive and O negative donors.
Energy comes from making bonds in carbon dioxide and water.
<span>toxic chemicals is a major cause of water pollution.
In most cases, the toxic chemicals came from the residual from production process after companies done making their product.
Rather than safely create a method to dump this, many companies decided to recklessly throw them away in water source (such as river or lakes) which eventually create the water pollution.</span>
It is impossible as there is a loss of energy between the transfer of energy between flogs and <span>mosquitoes. This ecosystem would never be sustainable or in equilibrium. There is also no primary producer within this ecosystem. No ecosystem can exist without some initial source of energy that would be obtained using solar or chemical energy. For terrestrial ecosystems, plant primary producers would normally provide the initial energy into the ecosystem. </span>