Answer:
The answer is A
Explanation:
https://blog.thepondguy.com/2011/04/01/why-do-frogstoads-make-so-much-noise-pond-lakes-qa/
The Richter scale measures strength while the Mercalli intensity scale measures the effects of an earthquake. Another difference between the Richter scale and the Mercalli intensity scale is - the Richter scale provides a single measurement while the Mercalli intensity scale can produce multiple measurements depending on the area affected.
The Richter Scale is an absolute scale and the Mercalli scales measures how people feel and react to the shaking of an earthquake.
Pituitary Glands
Explanation:
The pituitary gland is crucial as it takes messages from the brain and uses them to produce hormones which affects many parts of the body, including stimulating all the other hormone-producing glands to create their hormones. Due to this reason, it is often referred as the ‘master gland.’ The front pituitary produces hormones which affect the breasts, adrenals, thyroid, ovaries and testes.
Answer: Legionnaires' disease
Explanation:
Legionnaires' disease is a kind of pneumonia that is caused by the bacteria.The bacterial infection spreads by breathing the aerosol or mist from the water. The bacteria does not spread from person to person thus the disease is non-contagious.
The bacteria of the disease lives in the aquatic environment and may contaminate the water body. The symptoms of the disease includes the chills, coughs, high fever, headaches and muscle aches. X-ray and lab test can be done to diagnose the disease.
A diverse set of ecosystems means that there will be a wide variety of selection pressures exerted on the organisms. Therefore, natural selection will act to bring out the best suited traits for that particular ecosystem. The more the ecosystems are diverse, the more will be the difference between the traits between the organisms that will survive. This means that the biodiversity will increase.