How do certain island plants and animals form mutually beneficial relationship

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s

If the textbook weighs 19.6 newtons on venus,what is the strength of gravity on venus?