Climate change!!!!!!!!!!!!
Answer:
a) calculating the concentration at which 50% of the test organisms of a particular species die
Explanation:
Bioassays -
<u>Bioassays is an analytical method to assess the effect of marine pollutant on the organism by estimating the concentration at which 50% of the test organisms die after exposing the test organisms for a specified time.</u>
It can be done by quantitative or by qualitative experiment , or direct or indirect .
It is used to detect the biological hazards or give the quality assessment of the mixture .
It is also used for the monitoring the quality of water .
Answer:
Natural elements such as metals, wood, and recourses such as H20,C02,and o2.
Iron, copper, and aluminum are 3 metals that are commonly used in todays economy.
The weathering of the mountain peak will be mostly through the influence of the wind, water, and ice, while the bedrock under a forest will be influenced by the plants.
Explanation:
The weathering is a process that occurs everywhere in the world, on the surface and close to the surface of the planet. This process is basically the breaking up of particles from larger masses of rocks. Which type of weathering will be dominant at a particular place depends n multiple factors, such as:
- topography
- vegetation
- climate
- presence/absence of water
A bear mountain peak will be exposed to strong winds. Also, the lack of vegetation will enable the water from the rainfall to have big influence, while in the colder months the formation of ice will contribute to significant weathering. On the other side, the bedrock under a forest will have minimal influence from wind, water, and ice, as the vegetation provides protection. The vegetation on the other hand, with its roots, as well as with the decomposition will manage to weather the rocks, both on the surface and inside the ground.
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