WorksheetsNatural Selection & Diversity, Carbon Cycle
Total questions: 17
Worksheet time: 16mins
One of the major elements of natural selection is that all species have genetic _______.
Stability
Variation
Melanism
digression
A population of bacteria is treated with an antibiotic. Because of variation in the population of bacteria, what is a possible outcome of the treatment?
Some of the bacteria may be resistant to the antibiotic and survive.
The population will increase rapidly.
The population will be better able to obtain a food source.
All of the bacteria will be resistant to the antibiotic.
One parrot species that feeds on large seeds nests is in the same tree as a parakeet that feeds on small seeds. How are the birds able to coexist?
They occupy different niches.
They occupy different communities.
They occupy different habitats
They occupy different ecosystems.
Global warming is caused by an increase in the level of carbon dioxide gas in the atmosphere. How has this affected the world's oceans?
There is an overgrowth of algae.
The oceans are warming as a result of the excess carbon dioxide.
The oceans are absorbing the excess carbon, causing the oceans to become acidic.
The oceans reflect a great deal of the carbon dioxide gas back into the atmosphere.
According to Darwin's theory of evolution, which organisms are BEST able to survive in nature?
organisms that possess the greatest number of mutations
organisms that possess overall characteristics best suited to their environment
those with the best camouflage and coloration
those that possess characteristics acquired during their lifetime
Carbon is a major component of all organic compounds, including carbohydrates, lipids, proteins, and nucleic acids. Carbon dioxide is continually exchanged between the atmosphere and oceans. What geological process returns carbon to the atmosphere in the form of carbon dioxide?
respiration
volcanic activity
decomposition of marine sediments
transpiration
The graph indicates what about the relationship between atmospheric carbon dioxide and time
over time, the amount of atmospheric carbon dioxide does not change
over time, the amount of atmospheric carbon dioxide stays the same
over time, the amount of atmospheric carbon dioxide decreases
over time, the amount of atmospheric carbon dioxide increases
Why are the beak sizes and shapes of Darwin’s finches different?
They crossbred with different bird species
They adapted to the type of predators.
They adapted to the type of predators.
They adapted to the type of food available.
An increase in carbon dioxide in the atmosphere will MOST effect which type earth activity?
An increase in carbon dioxide in the atmosphere will MOST effect which type earth activity?
earthquake frequency
mantle convection rate
volcanic eruption frequency
Scientists believe the first giraffes on Earth had shorter legs and a shorter neck than giraffes today. What can you conclude about these first giraffes?
They had abundant sources of water from which to drink.
They ate both meat and leaves from trees.
They had food sources that were low to the ground.
They found it necessary to flee quickly from predators.
This element is found in all living things. It is recycled when organisms die. It is transformed from one form to another through photosynthesis and cellular respiration. That element is
hydrogen.
carbon.
nitrogen.
oxygen.
During the Industrial Revolution, the dark peppered moth had an advantage because it
was larger and hardier.
was poisonous to many of its predators.
reproduced easily and quickly.
was larger and hardier.
Humans add greatly to the carbon cycle by
using solar power.
conserving energy.
planting trees.
driving cars.
What two processes fuel the carbon cycle?
transpiration and transport
photosynthesis and transport
cellular respiration and transpiration
cellular respiration and photosynthesis
The burning of fossil fuels by cars and factories has most affected the ______________ cycle
nitrogen
hydrogen
carbon
water
The Eastern grey squirrel lives mostly in oak trees that have a medium gray bark. In some cities, oak tree bark is darkening due to air pollution. This Eastern grey squirrel shows melanism, or the increase in black pigment in its fur. What is MOST LIKELY the reason for the change in fur color?
It is a way to help the grey squirrel attract a mate.
With age; this is a very old squirrel.
It is a way to help the grey squirrel attract a mate.
Squirrels from another region moved into the area.
Horses are much larger today than their two-foot tall ancestor, mesohippus. Geologists believe the change in size was the result of changing environments, from tropical forests to a grassland habitat.
Larger size would be an advantage for survival in this new habitat because
larger horses could find food easier than the shorter horses.
larger horses had longer legs and could run faster to escape predators.
the larger horses were better camouflaged than the smaller horses.
taller horses could reach the leaves that grow high on trees.
