Identifying Vertebrates
BE
Identify the group of animals that includes only vertebrates.
housefly, spider
dolphin, mouse
eagle, earthworm
O jellyfish, whale

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

What's wrong with this ecological pyramid? (multiple choice)1. secondary consumers should be at the bottom of the pyramid2. the sun has an arrow leading to decomposers 3. primary consumers should come after the sun4. energy retained should increase from the bottom to the top5. the sun should be at the bottom of the pyramid

What is point source pollution of an aquatic ecosystem? a) pollution of freshwater sources b) pollution from many sources that combine into one c) pollution that occurs over a wide area; water that runs off from fields, parking lots, and other land surfaces d) pollution that can easily be identified with a single discharge source, such as an open pipe which drains into a body of water