Basically, humans use lot's of energy for heating, lighting, movement, and machines, that energy has come from and energy source. Some sources are renewable, and some are None-Renewable. In general as a Non-Renewable source are fossil fuels. These come from under the ground meaning that there not usable. There can be a fixed amount of coal, oil, and gas in the world and when we use this energy then its gone and there is no coming back.
-Hope this helps .
The food chain works like, us humans are at the top we eat everything below and because we are at the to of the food chain nothing eats us and everything below gets eaten. OK think about it like this the small fish eats the plankton and the medium fish eats the small fish and so on the big fish eats the medium fish and then the human or shark eats the big fish
A point mutation is a mutation that affects only a single nucleotide of a nucleic acid. They involve substitution of one base for another which changes the complementary base as well in DNA, they may also involve insertions and deletions of a single base pair. I therefore think the point mutations in a DNA sequence may profoundly have an effect on the synthesis of proteins, or may also have no effect on protein synthesis at all. These mutations can be beneficial to an organism, however they are more commonly neutral or harmful.
This is called Hydronephrosis it is a condition that typically occurs when a kidney swells due to urine failing to properly drain from the kidney to the bladder. This swelling most commonly affects only one kidney, but it can involve both kidneys. If a blocked ureter is causing your condition, your doctor might need to do any of the following:
insert a ureteral stent, which is a tube that allows the ureter to drain into the bladderinsert a nephrostomy tube, which allows the blocked urine to drain through the backprescribe antibiotics to control infection.
