It is due to changes of genes in an egg cell
The double helix<span> describes the appearance of </span>double<span>-stranded </span>DNA<span>, which is composed of two linear strands that run opposite to each other, or anti-parallel, and twist together. Each </span>DNA<span> strand within the </span>double helix<span> is a long, linear molecule made of smaller units </span>called<span> nucleotides that form a chain.</span>
Answer:
It is (x+y)t miles from the school to Bob's home
Explanation:
Assuming the distance from Bob's home to school is d miles and the time taken is t hours
Distance covered when he had flat tire = d/2, time taken = t/2, rate = x miles/hour
Rate = d/t
x = (d/2)/(t/2)
d = xt miles from Bob's home to halfway the school
distance from halfway the school to the school = d/2, time taken = t/2, rate = y miles/hour
rate = d/t
y = (d/2)/(t/2)
d = yt miles
Total distance from school to Bob's home = xt + yt = (x + y)t miles
Answer:
Asteroids, meteors, meteorites, gases (such as helium).
Hope this helps.
The best way to keep track of experiments and other scientific data would be to write it in a data table. Hope this helps!