1/2=2/4 so you do 2/4+3/4=5/4
You have to make sure you do the same number for the denominator
Your question is asking about
Human Impact
Introduction to Human Impact
Human impact on the environment carries many negative longterm consequences.
Consumption, altering habitats, and carbon emissions are all human activities destroying the natural world.
Habitat Alteration
Habitat alteration is changing earth's natural compositing by destroying habitats to build upon or fragmenting habitats for roads and access. This is the biggest threat to biodiversity.
Pollution
Pollution is the contamination of Earth's atmosphere and surface (land and bodies of water).
Disposal of human waste results in land pollution, while burning fossil fuels results in air pollution. Land and air pollution affect water contamination.
Deforestation
Deforestation is the removal and destruction of forests.
Clear cutting completely removes all trees in an area for human consumption, such as building materials, paper products, etc.
Human Population Growth
The human population has continued to increase, which means human impact on the environment will increase as well.
Concerns include lack of space, food, and other resources, as well as disease outbreaks.
Acid Rain
Acid rain is caused by burning fossil fuels, which releases acidic gases into the atmosphere. The gases latch on to water molecules and the result is acid (low pH) rain.
Acid rain results in organism death and destruction of infrastructure.
Explanation:
a piece of land with water on three sides is called a peninsula
Answer:
Wet unit weight = 1.94 g/cc
Dry unit weight =1.05 g/cc
density of saturation = 0.41
porosity = 0.43
Explanation:
given data
Void ratio = 0.78
Water content -12%
Specific gravity of solids - 2.68
to find out
Wet unit weight and Dry unit weight and Degree of saturation and Porosity
solution
we know that Wet unit weight formula is
Wet unit weight = 
density of water
here Gs is specific gravity of soild and e is void ratio and density of water is 1
so Wet unit weight = 
Wet unit weight = 1.94 g/cc
and
Dry unit weight = 
density of water
Dry unit weight = 
Dry unit weight =1.05 g/cc
and
density of saturation is
density of saturation = Wc × 
her Wc is water content
so density of saturation = 0.12 × 
density of saturation = 0.41
and
porosity is
porosity = 
porosity = 
porosity = 0.43
