Enviornmental Science 13 Quiz Questions

A species that you are studying has a type III survivorship curve. Which one of the following describes this type of curve?

Survivorship rates are lowest during early parts of its lifecycle

A population has unlimited resources and exhibits rapid and sustained population growth. This type of growth would be best described by which one of the following?

Exponential

Which type of life history patten best describes humans?

K-Selected species

What is the approximate world population?

8 billion

Which one of the following age groups would most likely lead to rapid population growth in the future if it contained the greatest relative abundance within the population?

0-15 years old

What single factor has most strongly contributed to the rapid population growth in the human population withnessed over the last 150 years?

Reduced death rates

When a lion steals prey from a hyena this is considered which type of interaction?

Interspecifc

Which adaptation(s) help organisms avoid predation?

Camouflage

Thorns on plants

Mimicry

Which forms of symbios benefits one member of the interaction but neither benefits nor harms the other member?

Commensalism

What species distribution pattern does a herd of elephants exhibit?

Clumped

There are many different ______ within one phylum

Classes

Bacteria that photosynthesize would best be described as which one of the following?

Cyanobacteria

As Darwin recognized, populations evolve through natural selection when which of the following conditions are met?

Competition for limited resources

Variation of traits among individuals

More offspring are produced that can survive

Which one of the following would be described as anthropogenic?

Logging a forest

Which one of the following is not a major cause of biodiversity loss?

Zoonotic diseases

By definition, what are you most likely to find in a biodiversity hotspot?

A large number of endemic (native) species

The pesticide DDT is an example of which of the following?

Chemical agent

Which one of the following is an example of an emerging disease?

Covid-19

Antibiotic resistance in organims is the result of what process?

Evolution

LD-50 describes which one of the following?

The dose that results in 50% mortality

You are working as an environmental toxiciologist for the government. Your results indicate that a particular chemical causes birth defects. Which one of the following best describes the effects of the chemical?

Teratogen

Which one of the following is NOT a naturally-occurring element that may be hazardous to human health?

Phthalates