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Daniel [21]
3 years ago
10

What is the difference between a mold and a cast fossil?.

Biology
1 answer:
vekshin13 years ago
3 0

Answer:

The difference between a mold and a cast fossil are <u><em>a mold fossil is generated when an object is deposited in soft mud and then removed by decomposition or physical forces; a cast fossil is formed when a mold fossil fills up with sediment.</em></u>

Explanation:

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Arrange the level of cell organization from the simplest to the most complex, with 1 being the simplest and 5 being the most com
katen-ka-za [31]
The level of cell organization from the simplest to the most complex.

1) cellular level
2) tissue level
3) organ level
4) system level
5) organism level.

Actually there are 12 levels of organization from the simplest to the most complex.

1) molecule
2) cell
3) tissue
4) organ
5) system
6) organism
7) species
8) population
9) community
10) ecosystem
11) biome
12) biosphere
3 0
3 years ago
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Collectively, the hollow cavities in the maxillae, ethmoid, sphenoid, and frontal bones are called the ____________ sinuses..
slamgirl [31]
The answer to this question would be: paranasal sinus.

There are a few sinuses near the face area. The sinus can be classified based on the bone that makes then to sinus maxillae, ethmoid, sphenoid and frontalis. This structure frequently gets infected causing sinusitis. Sinusitis patient can complain pain or feel the sinus got filled with some liquid.
8 0
4 years ago
A woman, S.R., had a maternal grandfather with hemophilia A (OMIM 306700), an X-linked recessive condition that reduces blood cl
Sidana [21]

Answer:

Hemophilia is a x-linked recessive inherited bleeding  disorder. in this disease blood does not clot properly due to the decreased level of blood clotting factor VIII (8) or factor IX (9).

In x-linked recessive condition, the disease is transmitted from father (affected male) to his daughter and mother (affected female) to her son and skip of generation getting affected is also occurs.

  • there will be 50% chance of her (S.R.) each son to be affected with hemophilia.

Explanation:

Hemophilia is caused due to mutation of one gene which is responsible for the making of proteins of  blood coagulation factor viii or ix. the affected person bleeds continuously from any injury and that can cause serious issues.

here,

grandfather of s.r is affected (xₐy) and grandmother is normal (xx) will produce

                                                   ↓

 s.r's mother who is a carrier (xₐx) [as xₐy and xx will produce 100% carrier xₐx daughter]

                                                    ↓

s.r's mother is a carrier (xₐx) but her father is normal (xy) will produce,

                                                   ↓

s.r who has 50% chance of being carrier (xₐx) and 50% chance of being normal (xx) [as she is the only child] and she has a normal (xy) partner, they will give,

                                                     ↓

  1. if s.r is a carrier (xₐx) then one of her son will be affected (xₐy)   [as xₐx and xy =xₐy]
  2. if s.r is normal (xx) then her son will be normal (xy) [as xx and xy will give xy]

here,<u> 50% chance of her son to be affected with hemophilia</u> [as S.R of being affected is more considerable].

8 0
4 years ago
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son4ous [18]

Answer:

PLants are the most important, as the chain of energy starts there, and everything else depends on them.

6 0
3 years ago
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To prove Co2 is necessary for photosynthesis which experiment is carry out​
gayaneshka [121]

Answer:

Experiment to prove the necessity of carbon dioxide in photosynthesis - definition. Insert a part of the leaf of a destarched plant into a conical flask containing potassium hydroxide. Potassium hydroxide solution absorbs the carbon dioxide gas from the air present in the glass bottle.

8 0
3 years ago
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