Red phlegm, is this bad?

i have a cold/flu type thing at the minute, and have had a phlegmy throat all day. ive just coughed up some red phlegm though, is my throat bleeding? is it serious?

Is there a kind of aquatic gr that can be used as a "substrate"?

Not exactly a substrate but more like a layer of sand with a layer of aquatic gr covering most of the entire bottom with other live plants here and there. Is it possible? Easy to achieve? If so, what species would work best?

If Everything Is "Controlled By Destiny", Then Why..........................?

throughout my life , i have been hearing , whatever the mind can believe, the mind can achieve! that human being with a burning desire can win anything , and can affirm the subconscious! i wanted many things , with burning desire , still reverse happened! No if all is controlled by god, then all these motivational things are useless? all , that man makes his own life, thoughts , all is joke? Why? why? i am very sad?

What should my size be at 15.?

The last time I measured my it was 3 1/2 when erect. When I go to school I am subconscious when we go to P.E. Alot of people I see in gym fill out their boxers and it is completely noticeable and you can tell it is so much bigger than mine. Should I be worried or am I just a late puberty person. By the way im 15.

My cat meows and growls badly before having a poo?

Could be the dry food. Boy cats have very very narrow urethers through which the urine pes and dry food, being gritty, has been known to lodge in the urether and cause pain and discomfort when ping urine. I know you say its when he pes solids but something could be pressing on his bladder or whatever, causing discomfort. I would toss the dry food and feed him pouches of wet food, with perhaps an occasional dry treat. You'll soon see a difference if that's the problem.

Math help, please!?

The hypotenuse of a right triangle measures 29 cm. One leg is 1cm shorter than the other. What are the lengths of the legs?

Holden Jackaroo T/Diesel 1998?

I have a Holden Jackaroo T/Diesel 1998, I have just posted a question about a service i had done. i have just accidently deleted some of the answers but someone asked for more details about the vehicle. The oil has been changed to 5W30 and the oil filters have been replaced, There was a recall (before i Purchased it) for the Fuel injectors and around the same time the glow plugs where checked and given the ok (2006). The vehicle will wind over but will no fire. Any help/Advise would be much appreciated.