What conditions for organisms to compete in a struggle for existence

Answers

Answer 1
Answer: The lack of resources.

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Many drugs can be applied to the skin without entering the blood. How is this fact explained by the structure of the skin

Answers

The skin is made of epidermis and dermis layer. The blood vessel can be found in the dermis layer, a layer below the epidermis. To reach the blood, the drug has to pass through the epidermis. 
Epidermis is a layer that made of keratinized squamous epithelial cell that located in the outer layer. The epidermis layer is strong and prevents movement of water, which makes them hard to be penetrated by drugs. If the drug doesn't have a good penetration, it will not reach the dermis, thus not reaching the blood vessel. 

Medicines which are applied on skin they penetrate into the skin through hair follicles or epidermis and then into the circulation.

Further explanation

Skin

It can be defined as the largest skin organ with an all-out territory of around 20 square feet. The skin shields us from microorganisms and the components, manages body temperature, and grants the vibes of touch, warmth, and cold.

Layers of skin

It comprises three layers which are following.

Epidermis

It is the first layer of skin and it is a waterproof obstruction that gives skin its tone. Dead cells are shed consistently from the epidermis as new ones have their spot. Every day 500% million skin cells are shed by us. Indeed, the furthest pieces of the epidermis comprise of 25–30 layers of dead cells.

Layers of epidermis

  1. stratum corneum
  2. stratum lucidum
  3. stratum granulosum
  4. stratum spinosum
  5. stratum germinativum

Dermis

It makes sweat and oil, gives sensations and blood to the skin, develops hair. It is connective tissue, and it shields the body from anxiety It gives the skin quality and versatility. On the off chance that the dermis is extended a great deal, for example, during pregnancy, the dermis can be torn, and this appears as supposed stretch imprints.

It comprises two layers

  1. Papillary region
  2. Reticular region

Subcutaneous tissue

It joins dermis to the body, controls body temperature, stores fat. The most profound layer is called subcutaneous tissue, the hypodermis. It isn't actually part of the skin however appends the skin to hidden bone and muscle. Subcutaneous tissue likewise gives skin nerves and blood supply.

Absorption through skin

Drugs penetrate from the external surface of the skin both into the skin. Skin assimilation identifies with the level of introduction to and conceivable impact of a substance which may enter the body through the skin. Human skin comes into contact with numerous operators deliberately and accidentally. Skin assimilation can happen from word related, ecological, or shopper skin introduction to synthetic concoctions, beautifying agents, or pharmaceutical items.

Answer details

Subject: Biology

Level: High school

Key words

  • Skin
  • Layers of skin
  • Epidermis
  • Layers of epidermis
  • Dermis
  • Subcutaneous tissue
  • Absorption through skin

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The pollen in a flower is produced on which structure?A. style
B. stigma
C. anther
D. filament

Answers

C. anther: part of the stamen where pollen is produced.
the pollen on a flower is created in the anther

Juan was exposed to extremely cold temperatures for several days. His body is unable to maintain homeostasis, most likely resulting in which dangerous condition?

Answers

Answer: Hypothermia

Explanation:

Hypothermia is the condition which is caused when the body losses heat faster than it produces heat. The person under this condition feels very cold as the body temperature reaches below 95 F (35 C).

It can be adversely dangerous as it is not a normal body temperature at which the body works.

?The person can also get strokes and they can shiver for a longer period of time as the homeostasis of the body is not able to control the temperature of the body.

Since his body cannot bring his temp back to 98.6 and remain in homeostasis, he is risking developing Hypothermia.

what is the correct formula for photosynthesis? [A. C6H12O6+6O2+6H2O->6CO2+12H2O] [B. 6CO2+12H2O->C6H12O6+6H2O+6O2] [C. 12H2O+C6H12O6->6CO2+3O2+3H2O] [D. 6CO2+12H2O->C6H12O6+3H2O+6O2]

Answers

Answer: The correct answer is  B. 6CO2 + 12H2O → C6H12O6 + 6H2O + 6O2

Photosynthesis is a process of synthesis of food in green plants and algae. In this process, energy from sunlight is absorbed by chlorophyll pigment in the presence of CO₂ and H₂O and it is used for the formation of food, which is a carbohydrate ( glucose).

Thus, CO₂ and H₂O are used as reactants and glucose ( C₆H₁₂O₆) is synthesized as a final product of the process along with O₂ ( oxygen).

Option B) is the correct balanced equation for this process.


Answer:

B. 6CO2 + 12H2O → C6H12O6 + 6H2O + 6O2

Which ia a function of the plant cell wall

Answers

The main function of a plant cell wall is to protect the cell.

It prevents the cell from bursting

How to prevent human man made disaster​?

Answers

Firstly, if you can't avoid it, you need to evade the area, or otherwise hide, don't find anyway near it. Don't let it through any of yourself.

There are multiple regulations in which a man made disaster is meant to be advised however if one does happen it is best to seek shelter