Answer:
1. True.
2. False.
3. False.
4. True.
5. True.
Explanation:
1. True: The intestines breed both helpful and harmful microorganisms. This relationship between the host and these microorganisms is called a symbiotic relationship.
2. False: A child is born with many microbes in his or her body. Basically, it has been established that there are no microbes in the womb of pregnant women (mothers) and as such babies are not exposed to any microbe until when they are born.
3. False: A child is usually born with all of microorganisms that live in the human mouth. This is false as well because the womb and placenta is essentially free of bacterias, fungi and other microbes.
4. True: The intestines are a good breeding place for microbes. This is completely true because of the regulated temperature and it mainly contains foods which the microorganisms live on.
5. True: Animals provide a means to test and understand various disease germs. Animals such as squirrels, rats, mice, frogs, monkeys are all used as specimens for testing and understanding various diseases and germs.
b. occurs on preexisting soil
c. occurs in areas without soil
d. becomes normalized by climax species
Primary succession occur in areas without soil.
What is primary succession?
It is a ecological succession that begins in a lifeless area, such as a regions that has no soil or soil of which is not able to sustain life.
What is ecological succession?
It is the process by which structure of a biological community evolves over time.
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Answer:
The answer is Cells come only from pre-existing cells.
There are three tenets of cell theory:
1. All living organisms are composed of one or more cells.
2. Cells are the basic structural and functional units in all living organisms.
3. Cells come only from pre-existing cells.
In plants tissue cultures, single cells divide to produce roots, shoots, and leaves. This division suggests there must be some pre-existing cells from which those organs will be produced. So, the tenet that cells come from other cells in cell division is a basis for plant tissue cultures.
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Explanation:
a. True
b. False
(1) respiration (3) photosynthesis
(2) digestion (4) decomposition