The correct definition of biodiversity is the following: Biodiversity is the variance of plant and animal species within an environment. Correct answer: C
The term biodiversity denotes the variety of life on Earth: variety of flora and fauna. It includes species, genetic, and ecological diversity. Without biodiversity the life on earth would be impossible.
What imaginary line cuts across the top of south america?
The Equator
Answer: 
Explanation:
The Tropic of Cancer is one of the parallels (imaginary line around the Earth parallel to the equator) located in the northern hemisphere (currently its latitude is 
).
It is called "Cancer" because a long time ago, when the summer solstice occurred in the northern hemisphere (on June 20th or 21st), the Sun was in the constellation Cancer (the crab).
Now, if we were just in the North Pole, Polaris would by exactly over our heads (
over the horizon), but as we go south and find the Tropic of Cancer parallel, Polaris altitude will be approximately at an angle of over the horizon.
Hence, the altitude of Polaris measured by an observer at the Tropic of Cancer is .
Answer:
The top three international killers of children under the age of five are pneumonia, diarrhea, and malaria. With easy-to-do or easy-to-use solutions, such as simple hand-washing or sleeping under a mosquito net, children's exposure to harmful organisms is reduced and less children become ill. When these diseases are prevented, fewer children will require intervention. Hopefully, this will reduce infant mortality rates.
Explanation:
