Answer:
GAIA is an amazing telescope which can precisely measure and map the location of numerous (billions) of stars with perfect accuracy.
One of the major importance of GAIA is that it can give better information about stellar history and evolution.
This mapping helps in the prediction of the colours of different stellar, the brightening as well as the dimming of various stars etc.
In the future, the astronomers hope that this GAIA mapping will lead to the three-dimensional mapping of the space along with mapping their movements.
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The correct answer is option B- Clams
It is very clear how acid rain is affecting our ecosystem. Plants, animals and other living organisms are effected including their habitat.
When acid rain enters soil, it leaches aluminium from soil particles and mixes it with soil. Aluminium level in water intoxicates the water content which is critical for the survival of water animals.
The critical PH level for clams is 6.
Answer: A. glomerulus.
Explanation:
Each kidney has about 1 million nephrons, the urine-forming unit, and each nephron is made up of a glomerulus (capillaries walls) and renal tubules. The glomerular is constituted by the capillaries walls, which branch out and form a network, covered by the Bowman's capsule that retains the liquid, and begin to form a sequence of tubes.
The blood reaches the kidneys through the renal artery, which branches into the afferent arterioles that attach to the glomerular capillaries (where blood is filtrated), then form the efferent arteriole, which again becomes capillaries - the peritubular capillaries, which surrounds the renal tubules.