Help me please I don’t understand

1:Natural selection

2: competition

Natural selection;  the process by which organisms with variations most suited to their local environment survive and leave more offspring.

Competition: The struggle between organisms to survive in a habitat with limited resources (food, water, shelter)

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.