Which organ system contain the spinal cord list at least 4

Grasses--> mice--> cats--> coyotes suppose 10,000 units of energy are available at the level of the grasses. what is the total number of energy units lost by the time energy reaches the coyote?

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above

Hydroelectric uses moving water to do work such as grinding grains in a mill true or false