Answer:
<em>The correct option is B) increases</em>
Explanation:
Carrying capacity can be described as the maximum number of organisms of a species that an area can hold. The area will comprise of resources for a limited number of organisms of a species. If the population density increases for an area rapidly, then there will be severe competition for resources available. As a result, many organism will die due to this competition. Hence, the death rate will increase.
Answer:
1. Living
2. Non-living
Explanation:
Science is a general term that defines a means of understanding the world around us, at its natural state, involving both living things and non-living things. In other words, science is the systematic study of living things and non-living things.
Hence, in this case, the correct answer is Scientists work to answer questions about LIVING and NON-LIVING things in the natural world work.
Answer:
Plants in Bioremediation:
Plants perform the following bioremediation processes:
- Phytoextraction
- Phytodegradation
Bacteria in Bioremediation:
Bacteria are widely used to clean-up pollutants from the following:
- Wastewater
- Oil spills
- Contaminated soil
Explanation:
Bioremediation:
Bioremediation is the process of utilizing biological agents to clean up or re-mediate polluted environments.
Bioremediation Through Plants:
Plants perform different types of bioremediation processes:
Phytoextraction refers to the use of plants to extract or remove contaminants from an environment. This usually involves plants that are hyper-accumulators i.e. plants that have a genetic tendency to accumulate large amounts of a substance such as a nutrient or heavy metal. These plants simply absorb the pollutants from the soil.Following are some examples of plants and the heavy metals they accumulate:
- Heavy metal bioremediation with <em>Ficus microcarpa.</em>
- Sunflower or <em>Helianthus annuus </em>is used to extract the heavy metal arsenic from polluted soil. Sunflower has also been used to clear caesium-137 and strontium-90 from ponds in the aftermath of the Chernobyl incident.
- Alpine pennycress or <em>Thlaspi caerulescens </em>is used to clear the heavy metals cadmium and zinc.
- Indian mustard or <em>Brassica juncea</em>, ragweed or <em>Ambrosia artemisiifolia</em>, hemp dogbane or <em>Apocynum cannabinum</em>, or poplar trees are used to remove lead from the soil.
Phytodegradation is the process that degrades organic pollutants either in the soil or in the plant body. The plant's roots release enzymes that digest the pollutants. The pollutants can also be taken up by the plant, digested inside the body and then released in a modified form through transpiration.
Bioremediation through Bacteria:
Bacteria in contaminated soil and wastewater metabolize contaminants and transform them, through redox reactions, into energy yielding compounds required by the bacteria.
Oil spills are cleaned-up using two methods:
- Oil degrading bacteria are used to directly clean-up oil spills.
- Nutrients essential for the growth of oil degrading bacteria are used.
Who is keeping the dead animals because that’s nastyyyy !!
The Answer is D. Primary Sucession starts with no soil at all, caused by something like a volcano. New, dirt creating plants start to re-establish the area, and it's ecoosystem. Secondary starts with some soil, and is created by events like tornados or floods.
