Enviornmental Scientists and Ecologists

Explain how an oil spill devastates marine life when animals get covered by the toxic sludge.

Oil spills have poisonous chemicals that are responsible for killing thousands of marine animals and birds. The marine birds and mammals covered with oil spills are not able to regulate its body temperature which causes the killing of these marine mammals and birds.

Explain the method scientists use to study how Earth's atmosphere and climate have changed during the past million years.

The study that involves the research over earth atmosphere and climate changes in the past is known as the paleoclimatology. The study mainly concentrate over the past climates of Earth and atmospheric changes that took place in the past centuries. Studying fossils.

Explain E.O. Wilson's theory of Island Biogeography as it applies to environments other than islands physically surrounded by water.

Today, Wilson's theory is applied to any ecosystem that is surrounded by unlike ecosystems. These ecologies are 'islands' because they are physically separated from related ecosystems.

Why have wildlife experts only estimated the number of endangered species in the world?

Wildlife experts believe that many species of plants and animals have not been discovered or studied yet, so the total number of endangered species can only be estimated.

How did DDT nearly drive the Peregrine Falcon to extinction in the 1950s and 60s a. reproductive disruption b. blindness c. cancer d. feather loss

a. reproductive disruption

Entomology is the study of _______. a. words b. insects c. fish d. flowers

b. insects

Observation of tool-making among chimpanzees was revolutionary primarily because scientists believed ______ a. chimpanzees lacked the dexterity to make tools b. tool use was a defining characteristic of humans c. tool-making was a defining characteristic of humans d. none of the above

c. tool-making was defining characteristics of humans.

The best description of the greenhouse effect is that it _______ a. is solely the result of burning fossil fuels b. generates heat in the atmosphere c. traps the heat generated by burning fossil fuels d. collects heat emitted by the sun

d. collects heat emitted by the sun

Every year _______ species go extinct.

d. 20000

What are the three pressures that lead to biodiversity according to E.O. Wilson's theory of island biogeography?

due to immigration, emigration and extinction events.