Which situation can be identified by a biodiversity study of an area? A.
A currently undetected invasive species will invade the ecosystem.
B.
The decline of a shrub species is caused by an increase in an herbivore population.
C.
A flood is likely to hit the area very soon.
D.
The ecosystem will expand its geographical range in the next 50 years.
E.
An animal species is experiencing altered reproductive function.

This is actually a calculus question. so, basically, this is a related rates question where you are given 1 quantity and you have to find the other.  we'll define some variables first.x = 9 ftdx/dt = 7 ft/secl = 15 ftsince you want to find the area, you have to find a formula for it. which is: we know the base (x), but we don't know the height (h). we can figure it out by solving for it. we have to form an equation which we can figure out height from given the information we have. this equation is: plug in known values: solve for h: now, let's solve for the rate at which h is changing. we can do so by differentiating the pythagorean theorem (above). let's do that: plug in values: now we have all the given information to do this problem. so, to figure out the rate of change of area, we can differentiate (with respect to time) the earlier equation: which is equal to: plug in known values: so, the area of the triangle is changing at approximately 18.375ft²/sechope this all makes sense. if it doesn't, either contact me, or watch khan academy - he explains it real well. special credit to turtaniumx and quietself for letting me know of the error, and fix it!

The larger the objects mass the larger the inertia and also the gravitational force.

The equator is in the middle of the earth so it is the even alp lit between hemispheres. this means it has the even most split between day and night.