The embryonic development of animals suggests an order of relation between humans and other animals; some animals being more closely related to humans than the others. Compare the embryos of the salamander, chicken, and monkey to that of the human (top image).

What statements about the embryos are true? Check all that apply.

All four animals begin as fertilized eggs.
The salamander and the chicken do not have an umbilical cord.
Only the fish has ancestral gill slits.
All four have identical limb buds.
Only the chicken will develop a shell breaker.

Ameadow ecosystem includes many species of grasses and small shrubs, several herbivores, and a few carnivores. a fungus colonizes the meadow and kills most of its vegetation. what is most likely to happen to the populations of herbivores and carnivores in the ecosystem? a. the populations of herbivores and carnivores will increase because there will be less competition for chemical energy. b. the populations of herbivores and carnivores will remain stable because the fungus cannot infect these organisms. c. the populations of herbivores will decrease because of vegetation loss, but the population of carnivores will remain stable. d. the populations of herbivores and carnivores will decline because less chemical energy will be stored in the ecosystem.

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates

Which event would lead to primary succession of a forest?