The siberian husky is a medium dog, weighing between 16-27kg (35-60lbs). these dogs have strong pectoral and leg muscles, allowing them to move through dense snow. if they had heavier muscles, they would sink deeper into the snow and move slower. yet, if they had lighter muscles, they would not be strong enough to pull sleds and equipment. this is an example of which type of natural selection?

Astone dropped into a well is heard to strike the water after 8seconds. find the depth of the well if the velocity of sound is 350m/s

What happens in a global convection cell

This is important 1. what happens to the speed of molecules in water vapor when it condenses to form a liquid? (2 points) the molecules slow down. the molecules speed up. the molecules slow down and then speed up. the molecules speed up and then slow down. 2. how might human activities change to compensate for a decrease in water supplies? (2 points) humans might build a factory. humans might build drainage systems. humans might extract more water from the ground. human behavior does not change because of the water cycle. i'll be grateful if anyone can answer these 2 questions !