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Aleks [24]
3 years ago
12

Explain how microbes are useful to us?

Biology
1 answer:
FrozenT [24]3 years ago
4 0

Answer:

Explanation:

1. Microbes play defense. The oodles of microbes that live on and inside us protect us from pathogens simply by taking up space

2. Microbes boost the immune system

3. Microbes protect us from auto-immune diseases.

4. Microbes keep us slim. Microbes play an important role in our body shape by helping us digest and ferment foods, as well as by producing chemicals that shape our metabolic rates.

5. Microbes detoxify and may even fight off stress.

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What causes magnetic striping noticed about mid ocean ridges?
Bezzdna [24]

<span>
Magnetic Striping
<span> 

</span><span>The confirmation of the theory of plate tectonics relies on key insights and scientific experimentation.  One of these is the knowledge of the magnetic properties of ocean crust.</span><span>Early in the 20th century, Bernard Brunhes in France and Motonari Matuyama in Japan recognized that rocks generally belong to two groups based on their magnetic properties.  One group known as normal polarity has within its mineral composition a polarity similar to the Earth’s magnetic north.  The magnetic properties of the other group, called reversed polarity, is the opposite of the Earth’s present day magnetic field.   The reason, tiny grains of magnetite found within the volcanic basalt that make up the ocean floor behave like little magnets. These grains of magnetite can align themselves with orientation of the Earth’s magnetic field.  How?  As magma cools, it locks in a recording of the Earth’s magnetic orientation or polarity at the time of fooling. </span><span>The Earth’s magnetic field is similar to the field generated by a bar magnet with its north end nearly aligned with the geographic North Pole.  Yet the Earth’s field is the result of a more complex, dynamic process: the rotation of the planet’s fluid iron rich core.  Scientists have known for centuries that the Earth’s magnetic field is dynamic and evolving.  The magnetic field drifts slowly westward at a rate of 0.2 degrees per year. </span><span>However, over tens of thousands of years, this field undergoes far more dramatic changes known as magnetic reversals. During this reversal, south becomes north and north south apparently in a geological blink of an eye – perhaps over a period of a few thousands years.  What these reversals recorded were stripes on seafloor maps-- stripes of alternating normal and reversed polarities of ocean crust.  These “stripes” formed the pattern known as magnetic striping.</span><span>The ocean floor had a story to tell.  That story would unfold in the work of three scientists.  In 1962, two British scientists, Frederick Vine and Drummond Mathews, and Canadian geologist Lawrence Morley working independently suspected that this pattern was no accident.  They hypothesized that the magnetic striping was produced from the generation of magma at mid-ocean ridges during alternating periods of normal and reversed magnetism by the <span>magnetic reversals </span>of the Earth’s magnetic field. </span>
</span>
7 0
2 years ago
Choose the best definition of a fossil. any trace of an organism that has been converted into rock the process that leads to pre
Mamont248 [21]
<span>The best definition of a fossil is any trace of an organism that lived in the past. Technically, a couple of the other choices (i.e. trace of an organism turned to rock, a hard part of an organism that has been preserved) could be considered within this group.</span>
7 0
3 years ago
This is any naturally occurring substance that is considered valuable on Earth. Example: air, water, rocks, and minerals​
Valentin [98]

Answer:

Natural Resource

Explanation:

3 0
2 years ago
You are studying for a test, and trying to figure out how to answer some of the questions your teacher gave you. Explain how you
lianna [129]
T controls your voluntary muscles — the ones that move when you want them to. So you can't dance — or kick a soccer ball — without your cerebrum.
8 0
3 years ago
Read 2 more answers
Fill in the blank
Vesnalui [34]

Answer:

1. Trophic level

There are basically five trophic levels in a typical food web in relation to organisms primary source of energy. In other words, there are several trophic levels an organism can occupy in a food chain which depicts the number of steps it is from the start of the food chain which starts with primary producers (i.e. plants). The next trophic level after that is where you find herbivores (i.e. animals that feed on plants). And the level continues as such as you have more organisms on the food chain relying on organisms that are on the previous trophic level for their nutritional needs.

2. Commenalism

A typical example of commenalism is the one-sided symbiotic relationship between cattle and cattle egrets. The cattle egrets feed on insects being disturbed as the cattle graze on forage while the cattle remain unharmed.  

3. Interspecies competition

Interspecies competition is bound to occur if two or more organisms occupy the same niche or environment leading to a struggle for the limited resources needed to survive.

4. Ecological succession  

Virtually all ecological communities have undergone succession, which involves the introduction of new physical features and biological components into an area. Ecological succession could be primary or secondary. There is usually a progression from a less stable community to a community that is more stable.

5. Ecosystem

An ecosystem consists of two major components: biotic components such as community of living organisms and abiotic components which make up the environment of living organisms. Living organisms interact with abiotic components of the ecosystem through energy flows and nutrient cycles to keep the ecosystem alive and functional.

6. Ecological Resilience  

Forces such as fires, insect infestation, human activities, wild fires etc. can disturb an ecosystem’s balance. In reaction to such forces, an ecosystem having resilience has the ability to respond to such disturbances through mechanisms that help restore the ecosystem back to its equilibrium state.

7. Hypothesis

An hypothesis is a statement of guess made to explain an observation. It can be tested or verified through evidence from experiments or researches to give a more informed facts that could either prove the statement as false or support the statement.

8. Mutualism

Mutualism is a symbiotic relationship where both parties benefit from the relationship. An example of mutualism is the symbiotic relationship between nitrogen fixing bacteria and leguminous plants. The bacteria helps in converting nitrogen into compounds like ammonia for easy absorption by the roots of the leguminous plants. The leguminous plants provide a conducive and favorable environment for such bacteria to thrive.

9. Parasitism

In this type of relationship, the parasitic organism feeds and benefits from the host organism it is found on or in, while the host suffers harm. An example is the parasitic relationship between ticks and dogs. Dogs serve as the host. Ticks live on the skin of dogs and also suck their blood, causing irritation, anemia and discomfort to dogs

10. Predation

For example, Lions hunt and eats herbivores like antelopes. The lion is the predator while the prey is the antelope.

4 0
2 years ago
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