Indicate whether each source is reliable or unreliable.
a scientist who studies dinosaurs presents her research on velociraptors at a science
convention
a chemistry teacher discusses plant cells on his personal blog.
an advertisement for weight-loss pills in a magazine claims that you will lose 10 lbs in
one week
an article discusses photosynthesis in an encyclopedia.
an article discusses salmonella on the centers for disease control and prevention
(cdc) website.

The earths atmosphere is made up of nitrogen and oxygensolids turning into gases is called sublimation.

Ibelieve the answer is d. densityhope my answer has you : )

Distance covered = speed x timethe distance traveled going against the stream = distance traveled with the stream.therefore it is the speed and the time that are the variables.as he travels the same distance both ways, speed x time is the same for each way.going upstream his speed is 4 kph; going downstream his speed is 6 kph.therefore we have two simultaneous equations: time upstream x 4 = time downstream x 6time upstream + time downstream = 60 minutestherefore we have the equation: time upstream = 6/10 hour, time downstream therefore = 4/10 hour.distance traveled at 4km/hr in 6/10 hour = 24/10 = 2.4km.check: distance traveled at 6km/hr in 4/10 hour = 24/10 = 2.4km.

Amperes. i got it right on edgenuity