NEW
Font size
WorksheetsScience
Total questions: 15
Worksheet time: 11mins
What´s evolution?
A natural, continuous, and dynamic process through which species adapt to the environment.
A linear process in which all species have a common ancestor.
Different transformations in an individual of a population.
The developing of new species in response to changes of the environment.
Which are the main domains for classification?
Bacteria and eukarya
Archaea, prokaryotic, and eukaryotic
Eukaryotic and prokaryotic
Archaea, bacteria, and eukarya
Which is an example of direct evidence?
Bacteria and antibiotic resistance
Fossils
World distribution of the organisms
Genetic breeding of dogs
What is the main idea of natural selection?
Individuals in a population are the same and acquire the necessary characteristics to survive.
These adaptations are transmitted to the offspring.
Species use some organs more than others. Its use specializes them, and its disuse makes them disappear.
A variability in a population that leads them to different responses to environmental changes.
Darwin comes to town This one is a different perspective from that of most scientists who see cities as non-natural places. In this vision, urban areas are considered pockets of evolution due to the extreme conditions they present for species: some of them disappear while others adapt to their new circumstances.
Why are cities considered as pockets of evolution?
Because Darwin comes to town
Because of the extreme conditions they present for species
Because scientists see cities as non-natural places
Species that have developed mutations that allow them to survive in this new environment, reproduce quickly, making evolution fast.
Why is development faster in urban areas?
Because species died in the process of adaptation
Because species have adapted in the new environment and reproduce quickly
Because evolution is slow
The blackbirds of European forests were shy birds, but now, some have colonized the cities that gradually urbanized the forest. The blackbirds of the city have changed in many ways: they have shorter beaks, they do not migrate, and their breeding time is earlier, have different responses to stress, and their singing tone is different.
What type of adaptations does the city blackbird present?
their singing tone is not different...
they don´t have different responses to stress...
they have shorter beaks, they do not migrate, and their breeding time is earlier...
How does solar energy enter the ecosystems?
Through photosynthetic organisms
Through consumer organisms
Through the action of decomposers
Through predators
Why are decomposers important in the cycle of matter?
Because they produce oxygen for the atmosphere.
Because they produce organic matter for the cycle.
Because they produce carbon dioxide for the atmosphere.
Because they produce inorganic matter for the cycle.
Which are sources of carbon dioxide?
Water and marine sediments
Sediments of carbon, combustion, and burning fossil fuels
Breathing
Photosynthesis
Which problem is considered the most severe aggression to the ecosystem?
Urbanization
Industries
Agriculture
All of them
Toxic Waste Toxic waste is any solid, liquid, or gelatinous residue that contains chemical elements, heavy metals, or radioactive elements in its structure.
What is toxic waste?
are not radioactive elements in its structure...
are not heavy metals...
is any solid, liquid, or gelatinous residue that contains chemical elements...
It is a potential danger and is caused by human activities such as industries, construction, agriculture, laboratories, and even households, by discarding batteries, used computers, paint residues, and pesticides
Where do we find toxic garbage in homes?
discarding batteries, used computers
industries, construction,
laboratories
agriculture
This garbage can damage people, animals, or plants, as it ends up polluting soil, water, and even the air. Toxic waste such as mercury and lead can persist in the environment for many years and accumulate. Humans and wildlife absorb these products through food.
How do these wastes enter the organisms?
though pollution
through food.
through years
In many places, such wastes are handled professionally: collecting them on specific days and locations or storing them inside sealed containers, buried and covered with lime.
Why is toxic waste sealed and covered with lime?
To be buried in certain day and location
To be experimented in a laboratory
To be throw in some non living lands
