Answer: Spores
Explanation: I took the test
ecology-The scientific study of interactions among organisms and between organisms and their environment, or surroundings.
biosphere-Contains the combined portions of the planet in which all of life exists, including land, water, and air, or atmosphere.
species-A group of organisms so similar to one another that they can breed and produce fertile offspring.
populations-Groups of individuals that belong to the same species and live in the same area.
communities-Assemblages or different populations that live together in a defined area.
ecosystems-Assemblages or different populations that live together in a defined area.
biome-Assemblages or different populations that live together in a defined area.
atotrophes-Only plants, some algae, and certain bacteria that can capture energy from sunlight or chemicals and use that energy to produce food
producers-Those that can capture energy from sunlight and those that capture chemical energy.
Photosynthesis-Producers
Those that can capture energy from sunlight and those that capture chemical energy.
Photosynthesis -Autotrophs use light energy to power chemical reactions that convert carbon dioxide and water into oxygen and energy-rich carbohydrates such as sugars and starches.
Chemosythesis-When organisms use chemical energy to produce carbohydrates.
Heterotrophs-Organisms that rely on other organisms for their energy and food supply
Consumers-A.K.A. Heterotrophs
Herbivores-Heterotrophs that obtain energy by eating only plants
Carnivores-Eat animals
Omnivores-Eat both plants and animals
Detritovores-Feed on plant and animal remains and other dead matter
Decomposers-Breaks down organic matte
Food chain-A series if steps in which organisms transfer energy by eating and being eaten.
Food web-When the feeding relationships among the various organisms in an ecosystem form a network of complex interactions
Trophic level-Each step in a food chain or food web
Ecological pyramid-A diagram that shows the relative amounts of energy or matter contained within each trophic level in a food chain or food web.
Biomass-PLAY
Ecological pyramid
A diagram that shows the relative amounts of energy or matter contained within each trophic level in a food chain or food web.
Biomass -The total amount of living tissue within a given trophic level
Biogeochemical cycles-When elements, chemical compounds, and other forms of matter are passed from one organism to another and from one part of the biosphere to another.
Evaporation-The process by which water changes from liquid form to an atmospheric gas.
Transpiration-The process of which water can also enter the atmosphere by evaporating from the leaves of plants.
Nutrients-PLAY
Transpiration
The process of which water can also enter the atmosphere by evaporating from the leaves of plants.
Nutrients -All the chemical substances that an organism needs to sustain life.
Nitrogen fixation-Such bacteria, which live in the soil and on the roots of plants called legumes, convert nitrogen gas into ammonia.
Denitrification-Nitrogen fixation
Such bacteria, which live in the soil and on the roots of plants called legumes, convert nitrogen gas into ammonia.
Denitrification -The process of which other soil bacteria convert nitrates into nitrogen gas.
The biosphere-All of life on Earth exists in a region known as
Community-Groups of different species that live together in defined area make up a(an)
Food chain-The series of steps in which a large fish eats a small fish that has eaten algae is a
Biomass pyramid-The total mass of living tissue at each trophic level can be shown in a(an)
Biogeochemical cycles-Nutrients move through an ecosystem in
Phosphorus cycle-What biogeochemical cycle does NOT involve a stage where the chemical enters the atmosphere?
Limiting nutrient-When an ecosystem is limited by a single nutrient that either is scarce or cycles very slowly, this substance is called a(an)
i hope this helps on this question and the rest of your homework/quiz
In 1983 a hospital-acquired intestinal infection caused by the bacterium Enterococcus faecium joined the list of bacteria that could not be killed by penicillin.
Which of these BEST describes why certain bacteria have become resistant to penicillin?
A) The penicillin in the 1970's was much weaker that the penicillin used today, thus it was not as effective.
B) Penicillin was not effective in treating any bacterial diseases, so the doctors had to find new treatments.
C) These new bacterial strains came out of the jungles and forests already equipped to be penicillin-resistant.
D) Penicillin was so heavily prescribed by doctors that it led to certain, more fit, strains of bacteria to be able to survive.
2)
I think B but i’m not for sure
Answer:
D. Penicillin was so heavily prescribed by doctors that it led to certain, more fit, strains of bacteria to be able to survive.
Explanation:
Researchers thought penicillin was the cure for all, and thus it became overused. Through natural selection, new, stronger strains of bacteria developed.
Answer:
Those organisms are fit which has the ability to survive in harsh climatic condition and transfer their traits to the next generation through the process of reproduction.
Explanation: Fit means they are strong and compete with other organisms for food, shelter and other survival items. Those organisms which are not fit could not survive in harsh environmental conditions and removed from that ecosystem.
Answer:
The organism is better able to survive and pass on traits to offspring than competing organisms.
Explanation:
I just took the Quiz.
Answer
A.human industrial processes
B.lightning
C.certain bacterial species
D.all of the above