Underground mammals, such as the ancestors of moles, are thought to have first evolved as the dinosaurs died out.

Which effect of an environmental change does this best illustrate?

migration

loss of habitat

change in behavior

speciation

How do we know that space is not infinite

A rollercoaster car is moving 19.8 m/s on flat ground when it hits the brakes. It accelerates at - 3.77 m/s over the next 45.8 m. How much time does it take

An object is on a spring (k 7.3 N/m). The maximum speed of the object is. 25 m/sec, and the maximum displacement is 85 cm. What is the mass of the object?

Which of the following is a chemical reaction? A. A spoon bending B. Wood burning C. Plates being stacked D. A book being opened

A Honda Hawk motorcycle and its rider with a combined mass of 450 kg travels around a curve of radius 106 m with a speed of 18 m/s. Calculate the coefficient of static friction of the pavement if they negotiate the curve without skidding.

An ideal gas is maintained at a constant pressure of 70,000 Pa during an isobaric process and its volume decreases by 0.2m^3. What work is done by the system on its environment? a. 14,000 Jb. 350,000 Jc. - 14,000 Jd. - 35,000 J

How long does it take pluto to orbit the sun

Which best describes the steps involved in the operation of an electric generator?

The process by which energy is released from nutrients is called

Which of the following does not use an internal combustion enginea. a cannonb. a lawnmowerc. a windmill d. a car