The official language of Iran is
A. Hebrew.
B. Arabic.
C. Berber.
D. Farsi.
D. Farsi.
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A boulder and a stone in free fall have equal accelerations because the
A. ratio of force to mass is the same. B. air resistance is always zero in free fall. C. force due to gravity is the same on each. D. inertia of each is the same.
Which of the following is an example of a scientific law?
A. A spaceship in space reaches a certain velocity and then cuts off its engine. It will travel for millions of miles unless acted upon by another force or body. B. You are driving down a section of highway that is perfectly level (no hills or valleys) at 60 miles per hour. You take your foot off of the accelerator and coast for 100 miles. C. Pennies dropped off a 1000-foot high building travel faster than pennies dropped out of a plane at 1000 feet above the ground. D. A bullet fired on Saturday always goes farther than one fired the next day (Sunday) using the same gun at the same temperature.
Nutrients in surface waters can become depleted following periods of rapid phytoplankton growth known as ------------Fill in the blank(s) with the appropriate word(s)
What evidence do scientists use to estimate the density and composition of the core? What will be an ideal response?