Answer: The correct answer is green house effect.
Explanation:
Green house effect:It is a process in which the infrared rays coming from the sun gets absorbed or re-emitted in the atmosphere. In this way the heat is trapped in the atmosphere.
In the given problem, glass windows allow light in, but trap the heat inside. This effect is due to the green house effect.
Convection: It is a process in which there is an actual movement of heat particle.
Conduction: It is a process in which there is no actual movement of the particle. It transfers heat directly from one place to another.
Global warming: The gradual increase in the overall temperature of earth's atmosphere that causes change in the climate. It is the result of the green house effect.
Therefore, glass windows allow light in, but trap the heat inside. This describes green house effect.
A.extinct
B.endangered
Answer:
B.endangered
Explanation:
Choose "extinct" if the species is extinct and "endangered" if the species is endangered.
Sixty years ago, as few as 20 whooping cranes were left on earth. Now, thanks to conservation efforts, there are more than 300 whooping cranes in the wild.
A.extinct
B.endangered
if there are 20 whooping cranes sixty years ago, and then we have more than 300 today. then it means that the species are endangered
I will go with B
An extinct species no longer exist because there are no offsprings of the parent specie which can give birth to more subspecies .
species no longer exist anywhere on Earth, and once gone they are gone ... on International Trade In Endangered Species like Wild Fauna and Flora (CITES). .... in 1975; the species now numbers more than 1, 000 animals .... whooping cranes, this approach fails to protect most endangered species
Endangered means that the existence is threatened by some human activities, prevailing conditions in the environment or the host it feeds on to survive no longer exists within it reach, hence its survival is at stake
A) The distance you run
B) When you start your stopwatch
C) How big each step is
D) How fast you are moving
b. variable
c. control
d. hypothesis
Answer:
Explanation:
Given
Overall magnification
One lens magnification is
suppose the magnification of other lens is
A compound lens is made up of series of lenses either of same or of different magnification so
is given by
If lens is replaced by lens then total magnification is
The second lens has a magnification of 6x. If the 5x lens is replaced by a 7x lens, the new total magnification would be 42x.
To find the magnification of the second lens, we need to know that the overall magnification of a system is the product of the individual magnifications of its elements. If the overall magnification is 30x and one lens magnifies 5x, the magnification of the other lens can be calculated by dividing 30x by 5x, giving us a magnification of 6x for the other lens.
If the 5x lens is replaced by a 7x lens, we can calculate the new overall magnification by multiplying the magnification of the two lenses together. So, 6x (from the other unchanged lens) multiplied by 7x gives us an overall magnification of 42x.
#SPJ3
B. grid.
C. anode.
D. deflecting plate.
Answer: B. GRID
Explanation: I JUST TOOK THE PF EXAM AND GOT IT CORRECT!!!!