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erastova [34]
3 years ago
6

Tres ejemplos en los que se puedan emplear de polea movil

Biology
1 answer:
galben [10]3 years ago
6 0

Answer:

rueda, maciza y acanalada en su borde

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Introduction: The 19th century was the time of the Industrial Revolution in England. Most of the new
bagirrra123 [75]

Answer: Light colored peppered moths decreases in number and dark colored peppered moths increases.

Explanation: The population of light colored peppered moths decreases whereas the dark colored peppered moths increases in number because the light colored peppered moths are visible to the predator birds  whereas the dark colored peppered moths are not visible due to dark coating of the trees so they are saved from the birds and therefore, increase in population of dark colored peppered moths occurs and decrease occur in light colored peppered moths population.

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2 years ago
The stomata you view on the surface of the leaves are used in gas exchange and the guard cells regulate this exchange. What do y
beks73 [17]

Answer:

They will collapse and shut off the stomatal pore

Explanation:

The guard cells are regulated by the presence of water. When water is present, they become turgid and open up the stomatal pore and when water is inadequate, they become flaccid, collapse and close up the stomatal pore as a result.

<em>If the leaf is left under the microscope for too long, there will be loss of water by evapotranspiration and the guard cell will become flaccid and collapse as a result and the stomatal pore will become closed.</em>

8 0
4 years ago
Describe the characteristics of a vertebrate. Include an example.
Marta_Voda [28]

Answer:

They have a backbone, most use legs,wings,or fins for movement.

5 0
2 years ago
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Which macromolecule forms a double layer as the primary structure of cell membranes?
OlgaM077 [116]
Answer;
Phospholipid.

Phospholipid forms a double layer as the primary structure of cell membranes.

Explanation; 
Cell membranes contains of lipids (phospholipids and cholesterol), proteins and carbohydrates groups that are attached to some of the lipids and proteins. 
Phospholipids are composed of a polar head and non-polar (hydrophobic) tail. They line up such that the heads and the tail groups are side by side to form a single layer due to the interactions between the head groups and the tail groups. Two of these layers line up with the hydrophobic tail groups facing each other to prevent the hydrophobic groups away from the polar head groups of other phospholipids and from the water in the surrounding environment. 
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4 years ago
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What hormonal change occurs after fertilization that causes the endometrial lining to remain intact so that the fertilized egg c
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The pituitary gland secretes follicle stimulating hormone, which acts on the follicles and stimulates them to produce progesterone.
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