Christina and her friends are discussing the theory of evolution. One friend states that there is no evidence to support the theory of evolution. Which line of evidence could Christina offer to contradict her friend's statement?

A. All animal structures have evolved to perform a specific function.

B. Fossil evidence demonstrates the major changes of most species.

C. Humans have bred dozens of dog varieties from ancestral wolves

D. Vertebrate embryos share common ancestral features such as tails

Explain.

Each trait of a plant is determined a. an allele b. one gene c. a pair of genes d. one dominant gene

Study the diagram of a desert food chain . what would most likely happen if the kangaroo rats were killed off and removed from the food chain ?

For a to be healthy, it has to have lots of different kinds of plants and animals. all of the different types of plants and animals in an ecosystem. name four types of ecosystems from those listed in the video. b) c) d) most living things live here. all living things depend on how an ecosystem like a game of sticks? why should we build new buildings on existing land? name four extinct species from those listed in the video. b) c) d) the best way to wipe out a species is to the largest ecosystem in the world is this percent of the world is covered by water. how many of all species in the world live in the ocean? list five things you can do to increase biodiversity. b) c) d) e) how many species are we losing per hour?