10. deep open
make up 90% of oceans and are less than 400 m deep
make up 10% of the ocean and are greater than 400 m deep
make up 90% of the oceans and are greater than 400 m deep
make up 10% of oceans and are less than 400 m deep

What is thought to have caused the mass extinction at the end of the cretaceous period?

Which of the following best describes the expensive tissue hypothesis? brains require more energy, so the gut had to be reduced, and larger brains and tool use led to higher quality diets. increasing body size means that homo neanderthalensis had to include more fat in its diet. brains require more energy, so the gut had to be reduced as brains got bigger. brains require more fat, so the gastrointestinal viscera (gut) had to expand, and hands were needed to acquire more food.

The image shows a group of fish. the type of social behavior shown in the image is called