The reason that the ship gets pulled on the whole time is because Both planets well Planet and moon have a gravitaional pull, without them they would collide with each other. Its common sense that if you closer to the moon the moon has a greater affect on your with its gravity, thats why you must be closer to the moon in order for the moon to pull you closer in! :) Hope this helps!
They are called abrasion.
1.) a mature mushroom drops spores
2.)spores falls on the ground - germinate
3.)they meet compatible spores
4.)mycelium originates - pinheads originate
5.)primordially formation -growth mushrooms drops spore
6.)circles completed
The answer is "D"
The body's first line of defense is also known as Innate immunity and incudes mucous membranes. Both the intact skin and mucous membranes of the body offer a high degree of protection against pathogens.
A good example is the mucous membrane of the respiratory tract. It is lined up with cilia and covered with mucus. The coordinated beating of the cilia drives the mucus up to the nose and mouth where the trapped bacteria can be expelled.
(Lymph nodes and white blood cells belong to the second line of defense, not the first)
"Exponential growth" means that the bigger it is, the faster it grows.
That's Choice 'D'.