Answer:
the answer is 20 to 50 days
Explanation:
They’re population will decrease and potentially go extinct
Answer:
measure average changes in price over time that consumers pay for goods and services.
Answer:
The dairymaids possessed immunity against the more extreme smallpox as due to getting exposed to cowpox, the body of the dairymaids generated certain kinds of substance to defend against the cowpox, which also helped in defending smallpox.
When Edward Jenner found that the dairymaids suffering from cowpox possessed immunity towards smallpox, he concluded that the emergence of cowpox at the same time developed immunity towards smallpox. To ensure, Jenner collected a fluid sample from the pustule of cowpox and administered it within a boy's body, and thus, discovered the principle of immunity.
The correct answer is option (A) partial-mix aerated lagoon.
Partial mix lagoons are used to treat municipal, agricultural and industrial wastewater. In these lagoons, the aeration is provided by either mechanical surface aerators or submerged diffused aeration system. The submerged systems include the perforated tubing or piping with a variety of diffusers attached to it. Mechanical aeration provides dissolved oxygen needed for the aerobic organisms in the lagoon for the conversion and oxidation of organic material in the wastewater. The depth of the lagoon is up to 20 feet.
