Explanation:
1.<u>Seeds have endosperm which provides nourishment for a new plant, but spores do not have any stored food supplies.</u>
hope it helpful
Johannes Kepler- he did it by observing the ‘Tycho Brahe’. His 3rd law was published 10 years later to his first two laws.
Gravity?????????? or maybe like any object
Answer:

Explanation:
By Snell's law we know at the left surface




now we have


now on the other surface we know that
angle of incidence = 

so again we have

so we have


also we know that


By solving above equation we have
