Average year-after-year conditions are to CLIMATE as day-to-day atmospheric conditions are to WEATHER. Weather refers to the conditions of the atmosphere for over short time only and climate is used to refer for conditions over longer ranges.
You answer is intrusive rock
There's multiple conditions that contribute so that trees can not grow in the tundra, but the most important one is the climate.
The climate in the tundra is very inhospitable. Most of the year is winter, and the soil is frozen, not just on the surface, but also deep into the ground, thus not allowing a tree to be able to develop a root system. Also, the winds are very cold and strong, so a young tree will not be able to withstand them and will break. The summer lasts for only few weeks, and it is not a proper summer, but relatively cold one, thus not enabling the conditions for a tree to be able to vegetate.
Power has several definitions:
1) the ability to do something or act in a particular way, especially as a faculty or quality.
2) the capacity or ability to direct or influence the behavior of others or the course of events
3) supply (a device) with mechanical or electrical energy.
4) move or travel with great speed or force.
Answer:
I think it might be the third one... but I'm not sure.
Explanation:
I think k represents gravity because it's the string keeping the ball attached to the pole.