Biosphere II is a huge dome-covered self-contained structure located outside Phoenix, Arizona. Biosphere II was built to try to duplicate, in miniature, earth's biosphere and ecosystems, and use the information gained from the experiment to help design similar habitats on the moon and Mars. The habitat contained small versions of many of the earth's ecosystems, including an ocean with a coral reef, mangrove wetlands, grassland, a desert, an agricultural system, and a human habitat. Eight men and women were sealed inside the habitat for a proposed two-year stay. The air, water, and food for the "biospherians" all came from inside the sealed habitat, and their only contact with the outside was through computers and telephones. Before the two years were up, however, the experiment failed. Supplemental oxygen was pumped into the facility, and food supplies were provided through the airlocks. What caused the failure of the experiment? It was traced to nutrient pollution. The soil in some of the Biosphere ecosystems was unusually rich in nutrients. These excess nutrients caused a huge population explosion in decomposer bacteria, which led to oxygen depletion. To stabilize the environment in the habitat and become self-sufficient again, it would be helpful to :Question 4 options: Select oneadd nitrates and phosphates to the terrestrial and aquatic ecosystemsadd consumers to use carbon dioxide and nutrients and produce oxygen moleculesadd producers to absorb excess carbon dioxide and nutrients and produce oxygen moleculesadd decomposers to recycle nutrients in the soil and wateradd carbon dioxide to restart the carbon cycle
Answers: 2
Biology, 22.06.2019 02:00, sativataurus
The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that a) the four organisms do not have a common ancestor. b) humans are more closely related to chimps than any other apes. c) chimps are more closely related to gorillas than they are to humans. eliminate d) there is no evidence if any relationship between the four branches on the tree.
Answers: 3
Biology, 22.06.2019 08:20, AgarioEdit
The table lists the observations students made about four specimens under a microscope. based on these observations, what specimens did the students examine? animal plant virus prokaryote cell membrane present ribosomes present lysosomes present nuclear membrane present cell wall present ribosomes present nuclear membrane absent cell wall present ribosomes present nucleus present large vacuole present reproduces inside of a cell nucleus absent rna present 2019 edmentum all rights reserved intl
Answers: 2
Biosphere II is a huge dome-covered self-contained structure located outside Phoenix, Arizona. Biosp...
Mathematics, 15.01.2021 19:20
Mathematics, 15.01.2021 19:20
Mathematics, 15.01.2021 19:20
Mathematics, 15.01.2021 19:20
Social Studies, 15.01.2021 19:20
Mathematics, 15.01.2021 19:20
English, 15.01.2021 19:20