l only
lll only
lV only
ll and V only
Correct answer is B
No explanation has been provided for this answer.
l only
lll only
lV only
ll and lV only
Correct answer is D
Pesticides that are sprayed on to fields and used to fumigate soil can give off chemicals called volatile organic compounds, which can react with other chemicals and form a pollutant called ground level ozone.
Sulfur dioxide (SO2) is a gaseous air pollutant composed of sulfur and oxygen. SO2 forms when sulfur-containing fuel such as coal, oil, or diesel is burned.
The following organisms are consumers except
earthworm
spirogyra
bacteria
Rhizopus
Correct answer is B
No explanation has been provided for this answer.
Which of the following statements about the circulation of water in nature is not correct? Water
constantly evaporates from seas, rivers, lakes, and soil
vapour rises, cools, condenses, and precipitates as rain and dew
removed from ocean is permanently lost
is lost in plants by transpiratin and decay
Correct answer is C
No explanation has been provided for this answer.
The difference between a community and population is
a community is made up of organisms of the same species while a population is made up of organisms of different species
a community is made up of populations of living organisms while a populations is made up of organisms of the same secies
an ecological niche does not exist in the community but it does in a population
a community attracts competition but a population does not
Correct answer is B
No explanation has been provided for this answer.