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storchak [24]
3 years ago
8

Suppose that two ancient types of plants, one that grows in the winter and one that grows in the summer, appear together in the

fossil record for two periods in the geologic time scale. In the fossil records from a third period in the geologic time scale, one of the plants is suddenly missing. Which of the following would best explain why one type of plant disappeared but the other did not?
Biology
2 answers:
makvit [3.9K]3 years ago
7 0
Whichever option is most closely related to Natural Selection keeping the warm weather plants due to better conditions.
NemiM [27]3 years ago
6 0

Answer:

pollution

volcanic eruption

hunting

climate change

Explanation:

those are the choices  ^

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At 20°C the enzyme that catalyzes the breakdown of polysaccharides functions at 1 reaction every 20 microseconds. If this enzyme
lora16 [44]

Answer:

Seven segments

Explanation:

As given in the question -  

After every  twenty microseconds one reaction occurs i.e breakdown of polysaccharides.  

This means that after every  twenty microseconds the polysaccharides is broken down  

The total time for this hydrolysis reaction is  120 micro seconds

Thus , there will be six phases of division each after every  twenty microseconds

After 1st  twenty microseconds , total segments is equal to two

After 2nd  twenty microseconds , total segments is equal to three

After 3rd  twenty microseconds , total segments is equal to four

After 4th twenty  microseconds , total segments is equal to five

After 5th twenty  microseconds , total segments is equal to six

After 6th twenty microseconds , total segments is equal to seven

4 0
3 years ago
Drag each of the following organs to the appropriate organ system. Labels can be used more than once if the organ is a major par
Sergio039 [100]

Answer:

Nervous-brain as the components of the central nervous system,together with the spinal cord.

Digestive-Stomach as the components of the upper digestive or alimentary canal.It is for temporary storage and digestion of foods.

Small intestine where final digestion and absorption takes place

Respiratory-Lungs.-paired in mammals is for exchange of gases.

-Trachea as part of the upper respiratory system,conducts airways to the lungs

Reproductive-Ovary female reproductive organ for ova production

Urinary-Ureter for conducting urine to the bladder from the kidney to penis and orifice in females to the exterior.

Cardiovascular( the heart and the blood vessels)- heart the pumping organ into the blood vessels.

Endocrine-Thyroid gland for secretions of thyroid hormones -T3 and T4.

Pancreas for insulin and glucagon productions,and helps in digestion,

Integumentary-Skin,for protection of the body.

Lymphatic-Spleen.This forms the lymphatic system  for formation of un reabsorbed tissue fluids the lymph.

Skeletal-Bones for support and rigidity of the body,by attaching to the bones,

Muscular system-muscles for stability of the body in mammals.

Explanation:

5 0
3 years ago
True or false: the variable that is deliberately changed is called the responding variable.
Aliun [14]
The answer would be false.
4 0
2 years ago
Which cup of the gummy experiment color change.......
Jet001 [13]

Answer: Cup 2

Explanation: The color changed because the things around us and because I did the experiment to. Hope I Helped :p

5 0
3 years ago
________is the stage of mitosis in which chromosomes<br> form and the nuclear membrane breaks down.
Oksanka [162]

Answer: prophase

Explanation: im just big brained

3 0
3 years ago
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