How does the speed of sound change as it moves from the surface of the ocean to 1000 meters below to surface?
a.)the speed increases because the water is less dense at warmer temperatures. b.)the speed decreases because the water is denser at warmer temperatures.
c.)the speed increases because at cooler temperatures the water has more mechanical energy.
d.) the speed decreases because at cooler temperatures the water has less mechanical energy.

Zoe decided to measure the hand length of each of her classmates. first she marked a line across each student's wrist and lined up a ruler from this mark to the top of the middle finger to measure the length. then she recorded the measurements in the table below. marla did this the same way for each classmate, and then zoe used this ruler to measure each straight line and record the data below. this data is invalid. what is the most likely reason why it is invalid? the ruler is marked in centimeters, but zoe recorded data in inches. the range of lengths is too wide, so zoe must have misread the ruler. marla’s complicated measuring procedure was overly confusing. marla could have been inconsistent while drawing outlines of fingers.

Explain how ancient whale fossils found in eqypt are believed to support the theory of evolution.

Explain why the plants cortex would serve as the best food source for animals