Answer:
Because 2 forces are stopping the crate, friction and gravity. While only one force is trying to move it forward.
Gamma rays because microwaves, visible light and radio waves wouldn’t come in handy if an astronomer would want to study the composition of planets and stars.
For the first blank it would be: Lock
&
For the second blank it would be: Key
Night vision because the creature will be able to hunt food in the night, having enhanced eye sight. To continue, light colored fur would make the creature stand out taking away cover and the other answers have no benefit to the scavenger.
The type of cell division being shown is meiosis. Meiosis creates four haploid cells. The genetic material is exchanged between the cells during meiosis, meaning that the four daughter cells of each have a different variant of the genetic information.
