WorksheetsBiology-19 Human Influences
Total questions: 13
Worksheet time: 8mins
Humans always have a negative affect on the environment
True
False
Everything around you is called the environment.
True
False
When (a) are picked up by runoff, the effects can be harmful because the water that living organisms depend on becomes (b) . Human activities, such as overfishing and dumping pollutants into the ocean, can have a great impact, even causing (c) of some marine life. Artificial reefs have a (d) impact on the (e) because they help create underwater ecosystems. Typically, as human populations increase, the negative effects on Earth increase.
pollutants
polluted
extinction
positive
environment
An example of selective breeding is
a dog breeder mating 2 dogs to make more dogs
a farmer grows bees to pollinate the plants on his farm
a person pollinates 2 white rose plants to only create white roses
A student's model of an area near a city shows many activities that affect the quality of the water in the area.
How does the agricultural activity most likely affect the surface water of the area?
Excess crop fertilizer is carried by runoff into the river, causing excess growth of water plants.
Excess crop material accumulates on the riverbanks, slowing the movement of the river water.
Crops reduce erosion, increasing the amount of soil entering the river.
Crops absorb pure water from the soil, causing the remaining water to contain more salt.
What is monoculture
A farm with one crop
A farm with multiple crops
One crop being used in a culture
Multiple cultures using one crop
. The current rate of species extinction is
slower than at any other time in this century.
due mainly to the actions of humans.
the result of natural environmental processes.
of little consequence to Earth’s long-term survival.
It is often difficult to save individual species because
small populations are more prone to disease.
inbreeding may result in genetic disorders.
captive species may not reproduce in the wild.
all are correct
What are some successful ways to preserve biodiversity? Check all that apply.
captive breeding
laws and agreements
habitat preservation
overhunting
Which of the following would be considered good evidence that the over-exploitation of resources in an environment harms organisms living in that environment?
When people cut down and log trees in a forest, many species of animals lose their habitats.
Mining a mountain top for coal results in cheaper electricity for consumers in urban areas.
Water levels in a reservoir go down when water evaporates from the surface.
Large solar energy panels in the desert don't work well when they get covered in sand and dust.
Reforestation ...
involves planting trees to replace ones that have been removed
involves cutting down trees in a select area
involves monitoring the trees in an area
involves control over trees in an endangered animal's habitat
What is sustainable agriculture?
A concept in farming that maximizes profits by planting one crop throughout large areas
A means of food production that requires large amounts of processing and shipping to get to its consumers
A farming practice that focuses on protecting environments, public health, human communities, and animal welfare
A farming practice that is designed to work in any climate zone, therefore making it practical worldwide to end hunger
A country established annual catch limits to ensure fishing stocks can recover each year. Which of these statements best describes how these limits are established?
Limit Number of Fish caught, Close areas of the sea for part of the year, Restrict size of nets
Catch limits are equal to maximum sustainable yield, Larger nets, Open all areas to fishing
No limits oon fishing
Catch limits based on consumer demand, not on the health of fish stocks
