Answer
Hi,
FALSE
Explanation
Before 1970, most people started to see the effects of Climate changes such as increasing warming up of the United States and the North Atlantic region. Scientists during this period only suggested that these changes were due to natural cycle with unidentified reasons. After 1970s, scientists developed strong beliefs that greenhouse gases were the cause of increasing global temperature. In 1988, scientist initiated meetings and research on global scale as a positive move to cut greenhouse gas emissions.
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The short term human induced environmental changes are pollution and deforestation.
The term deforestation can be defined as the cutting down of trees in huge amount. The reason can be cutting down of trees for human settlement.
Pollution can be defined as the undesirable in the environment. This can be soil pollution, air pollution, land pollution, noise pollution or water pollution.
The effects of these two human induced environmental changes is short term.
Answer:
- <u>False</u> Bacteria are multiple-celled microscopic organisms.
- <u>True </u>Bacteria are the most abundant form of life on Earth.
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<u>True </u>Your digestive tract is home to billions of bacteria.
- <u>False </u>Vitamins are a type of medication used to kill bacteria.
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<u>True </u>Common bacterial shapes are rods, spheres, and cones.
- <u>False </u>Cilia or legs are used for locomotion in some bacteria.
- <u>False</u> In general, bacteria consist of a nucleus, ribosomes, and cell wall.
- <u>True </u>Some types of bacteria can make their own energy through photosynthesis.
- <u>False </u>Fusion is a form of asexual reproduction where two identical cells are formed from one parent cell.
- <u>True </u>Some bacteria can exchange genetic material with each other using a thin tube that connects them.
- <u>True </u>Bacteria can multiply and grow larger quickly.
- <u>True </u>Scientists think that bacteria evolved around 3.5 billion years ago.
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Explanation:
The fundamental microscopic components of all species are cells. Two groups of cells, Prokaryotes and Eukaryotes, exist. Prokaryotic (meaning pro: before and Karyon: for kernel/nut) identifies species that <em><u>do not have membranes surrounded by a cell nucleus or other organelles</u></em>.
Bacteria, thought to have evolved 3.5 billion years ago are types of prokaryotes and are the oldest forms of life on earth. As single- celled life forms, they take on various shapes (rods, cones, spheres, spirals) and are capable of reproduction through asexual binary fission, and exchange genes in horizontal gene transfer (conjugation, transduction etc) and cell fusion .
They live in communities and, grow exponentially in number over short periods of time. Some are autotrophs, capable of producing their own food through photosynthesis. Some species can move around using flagella, long whip-like projections from the cell.
In humans, bacteria have colonized the intestinal tract. While some are beneficial as part of the microbiome, others are disease-causing pathogens- these are typically eliminated via the use of antibiotics.
Answer:
d. Both species are kept well below their carrying capacities by predators.
Explanation:
<em>According to the competitive exclusion principle, two organisms in competition cannot co-exist in the long run.</em> One of the organisms will eventually out-compete the other and the weaker organism will eventually die off due to lack of resources or relocate to another environment.
However, when both species in competition are kept well below their carrying capacities by predators or any other environmental factor, both of them can co-exist because there will be more than enough resources due to low population.
The correct option is d.
Answer is A, just took the test...