Fertilizer can lead to algal bloom in aquatic ecosystems, which means that its usage may lead to oversaturation of algae in the seas and oceans. Although algae are good for these kinds of waters in limited amounts, when there are too much of them it can stifle all other life, thus having negative effects on aquatic ecosystems.
c disruption of animal habitats
Explanation:
One of the likely effect of large scale infrastructural development is that it can lead to the disruption of animal habitats.
To develop new infrastructure, new areas have to be cleared to install the facilities and this can lead into encroachment of animal habitats.
- Oil drilling projects are capital intensive ventures undertaken by exploration and production companies.
- The oil is usually found in geologic formations deep within the earth crust.
- To access this fuel, large drilling ventures must be undertaken in order to accommodate to technology and man power.
- New areas have to cleared and this can push the habitat of organisms backward
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The answer is B! Sex cells come from sexual reproduction meaning they will take a cell from both parents!
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There are many different types of cancer, each caused by different factors is the statement which best explains why cancer is so difficult to cure.
The option D is correct.
Explanation:
Cancer is an abnormal growth of cells in which the check on the cell cycle and programmed cell death ceases.
The mutation in the genes or DNA causes cell to divide profusely overpowering the check points of the cell division.
The cancer in particular cell is no longer at a single cell but it metastasizes to other organs and building its own capillaries to get nutrition.It gets difficult to treat the disease as many organs get affected.
Cancer is caused by lifestyle, mutation, carcinogens, eating habits, genetic factors or age related etc.
There are different strategies required to treat and prevent the cancers caused by different factors. So not one factor can be taken for the treatment purpose. Different organs affected with cancer require different line of treatment so it gets difficult to apply same strategy for everyone.
