What strategies and electromagnetic frequencies are thought to be the most logical for long-range communication across the universe with other intelligent beings? a.  explosion of nuclear devices at specific intervals and in specific patterns across earth when we are closest to a nearby starb.  night-by-night photography of nearby stars at hydrogen balmer wavelengthsc.  continuous radio and microwave listening and transmitting at frequencies at which the natural radio sky noise background is lowd.  x-ray surveys of space at appropriate times (e. g., when earth is closest to nearby stars in its orbit), in view of the penetrability of space at these wavelengths

The answer is C. The widely used technique for finding extraterrestrial life is use of SETI (search for extraterrestrial intelligence) dishes that listen for radio waves from outer space. NASA has also been sending radio waves to outer space with messages that could purportedly be decoded by alien intelligent life.

a neutral ph of 7 and normal organism temperature is needed for a certain enzyme to be effective.  

what would happen to the enzyme if the ph and/or temperature fluctuate greatly from the norm?  

a.the enzyme’s hydrogen bonds will break.  

b.the activation energy will increase.  

c.more product will be formed.

d.the ideal temperature and ph for the enzyme function will decrease.  

a "theory" a suggestion that is not 100 % accurate, or a figure. some people say its a theory because they of all the passed theory's about one subject. it depends sometimes theory might be accurate and sometimes they are.