Ecology Review

Charles Darwin concluded that 13 species of finches on the Galapagos Islands:

• were identical to 13 species of finches which lived on another island

• probably evolved from one ancestral species

• had all adapted to the same food source

• were not related

Darwin explained the differences in beak shape among Galapagos finches as being the result of:

• chance events

• differences that existed in the colonizing species

• the environment started growing food that the birds need to survive

• adaptations to eating different foods

Differences between members of the same species are called:

• variations

• species

• traits

• selections

The process by which all the different kinds of living things have changed over time.

• compound

• abiotic factor

• evolution

• herbivore

Natural selection occurs because there is _____________________ in a species and some individuals have traits which have greater advantages than others. 

 

• variation

• competition

• overpopulation

• selection

Which of the following problems can occur  humans choose to breed plants/animals for one specific trait over and over? Example: dog breeding

• biodiversity decreases, leading to unexpected genetic problems

• increase in biodiversity causing a wide variety of plants/animals

Which abiotic factor(s) do plants compete for in order to make their own food?

• Wind

• Sunlight

• Water

• Water and Sunlight

List the levels of organization from largest to smallest