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BabaBlast [244]
2 years ago
11

True or false (Gravity is an example of a non-contact force.)

Biology
2 answers:
schepotkina [342]2 years ago
7 0

Answer:true

Explanation:

Gravity is non contact

tresset_1 [31]2 years ago
3 0

Answer: true

Explanation:

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Lichens are composed of two organisms, a fungus
algol [13]

Answer:

B) ecological succession

Explanation:

The analogy given in this question describes ECOLOGICAL SUCCESSION, which is the series of changes that an ecosystem undergoes over a period of time. Ecological succession is of two types viz: Primary succession and Secondary succession.

Primary succession involves the series of changes that occurs on a new habitat that has never been previously colonized. This is the case of the colonization of bare rocks with no plant life by LICHENS. The action of the lichen, which involves secretion of acids that disintegrates the rocks into soil, paves way for the colonization of that area by new species.

Lichens, via the role they play in primary succession by helping alter a barren area into a fertile one that accommodates other organisms, makes them be regarded as PIONEERS of primary succession.

7 0
3 years ago
Chemical reactions change what and produce what?
Dmitry [639]

Answer:

chemical reactions change reactant and produce new substance called products.

Explanation:

chemical reaction is a change which will produce a new substance. ( while physical reaction does not produce a new substance.

5 0
3 years ago
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Peter was surprised to learn that, in addition to blood, there's another type of circulating body fluid that flows within separa
Kobotan [32]
The answer is tissue fluid. Tissue fluid holds far smaller quantity of protein molecules because they are too large to escape easily over the tiny holes in the capillary endothelium. Tissue fluid doesn't contain red blood cells because they are too large, but does comprise some white blood cells.
7 0
3 years ago
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2 years ago
A recently discovered enzyme is found to have maximum activity in a pH range of 6-8. It is thought that histidine and cysteine r
goldenfox [79]

Answer:

Cysteine

Explanation:

<u>Determine the Amino acid that is primarily involved in Binding </u>

The Amino acid that is primarily involved in Binding is Cysteine. while the other Amino acid ( i.e.  Histidine ) will be involved in Catalysis.

since the enzyme is functional at pH 6 to 8. and Cysteine has a pH of 5, it should be deprotonated and used primarily for Binding .

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