<span>b. gravel on the bottom of the aquarium</span>
An ecosystem involves both the biological (plants, animals, human beings) and non-biological (land, water, soil, and atmosphere) community which interacts as a system. More importantly, the living things are very dependent on the abiotic community since it cannot survive by itself. Every animal, plant and human needs the primary physiological needs of water, food and shelter provided by the abiotic system. <span>
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Biotic factors:
Plants
Microorganisms
Macroorganisms
The fertilizer is the independent variable because the independent variable is what changes
C. Organisms that contain functional recombinant DNA
Transgenic organisms are organisms that have
altered genomes and most transgenic organisms are usually generated in the laboratory
for research purposes. In transgene, the segment of DNA containing a gene sequence
is isolated from a particular organism and inserted into another or different organisms.
The introduction of transgene into an organism is to bring a change in the
phenotype of an organism.
The counter interval is 40.
I don’t get the rest?!
Answer:
Empty calories may be grasshoppers' downfall.
Explanation:
Many insect populations are declining, and a provocative new hypothesis suggests one problem is that rising levels of atmospheric carbon dioxide (CO2) are making plants less nutritious. That could spell trouble not just for insects, but for plant eaters of all sizes.