Answer:
E. are a dormant form of a bacterium AND are formed by members of medically relevant groups of bacteria.
Explanation:
Endospore is a structure formed by some bacteria when exposed to unfavorable conditions like lack of nutrition. It is a dormant non reproductive structure. When the bacteria is exposed to favorable condition, it regains its natural vegetative state. Endospores contain a large amount of dipicolinic acid which helps in the bacteria's dormancy.
Endospores are medically important because they are resistant to all the methods of destroying bacteria like UV radiation, desiccation, disinfectants and freezing. Two endospore forming genus, Bacillus and Clostridium are reason for many diseases. <em> Bacillus anthracis </em>causes anthrax which is very fatal to humans. <em>Clostridium botulimum</em> causes botulism and <em>Clostridium tetani </em>causes tetanus.
Answer:
B
Explanation:
When a mass of air is heated it becomes less dense. This is why a hot air balloon rises in the atmosphere. It is also the same reason why hot air rises and the moisture in it condenses to form clouds. The cooler less dense air mass moves downards (in some convection currents fashion) in to replace the hot rising air.
The answer is c because u have look at the picture very clearly.
The contractile vacuoles pump excess water out of the cell .
Biological conservation is important for ecosystem functioning. How ecosystems works is the reason behind all the commodities we enjoy. For example, due to dense forests, a lot of water is filtered trhough soil. This water replenishes underground streams, which ultimately allow us to filter that water. It's like forests are a giant and very effective mechanism to catch rain water. Besides, vegetation is pretty important for climate regulation in land, since it produces the oxygen we breath and gives shade from the sun. Any economical develpment could provide the benefits forests give. Noteworthy, forests are able to proliferate and endure, thanks a lot of interctions with microorganisms, invertebrates (like ants or bees, important pollinators). These are a few examples, why biological conservation, relies at the heart of our own population conservation.
