Why are there limited levels of consumers? for example, apex predators are usually tertiary or quaternary consumers. why don’t we have many 5th, 6th, or 7th level consumers?

4. how does a phospholipid behave in water? the phosphate head does not mix with water; the fatty acid tails do. the phosphate head and the fatty acid tails mix with water. the phosphate head and the fatty acid tails do not mix with water. the phosphate head mixes with water; the fatty acid tails do not.

Name the part of the the brain labeled "e".

The picture shows a fishing technique called trawling. how might trawling affect marine biodiversity