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3 years ago

What do an ogre, an onion and the earth have in common? they have layers! how many layers does the earth have?

1 answer:

amm18123 years ago

8 0

The earth has layers and is composed of four layers. The four layers of the earth are namely, crust, mantle, the outer core and the inner core. The core in the layers of the earth serves as the central region. The mantle is the earth’s solid bulk in terms of its interior. The inner and outer core are composed minerals and are the third and fourth layer in the earth.

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The ____________ contains mitotic cells. the ____________ contains layers of compacted, highly keratinized epithelial cells. the

Artemon [7]

Nail matrix
nail body
free edge nail
nail root

Nails are hard plates of tightly packed keratinized cells. They are clear and cover the dorsal surface of the last phalanges of fingers and toes. Nails protect the the ends of the fingers, allow us to scratch various parts of our body and help us grasping and manipulating small objects.
The site of nail growth is the nail matrix that is found beneath the nail root. The nail matrix is thick and is only composed of the deeper layer of the epidermis: the stratum basale (or germinativum). The keratinization of the cells of the nail matrix proceeds in the absence of a stratum granulosum and lucidum and this results into formation of a of a rigid and durable plate. As the nail matrix thus proliferates and differentiates, this hard plate is pushed forward onto the nail bed and the nail grows.

8 0

3 years ago

Read 2 more answers

A large number species on Earth become extinct during a short time period about 65 million years ago. Based on this pattern of e

max2010maxim [7]

Answer and Explanation:

During the whole biota history, there occurred extinctions due to different reasons.

During the Cretaceous, which took place between 145-65 million years ago, there occurred a massive extinction that eliminated most of the species on the Earth. Many of the characteristic groups of this period were affected. Dinosaurs, Plesiosaurs, Ammonites, Tricodonts, Cycas, Gynkgos, Conifers, the recent angiosperms, birds, and mammals.

The extinction was caused by the volcanic eruptions, and the unusual fall of many different asteroids, which caused important changes on the Earth´s surface. The consequent climatic change was what ended affecting all the species directly. The extinction was gradual, although it occurred in a short geological lapse of time.

4 0

3 years ago

How are most nutrients absorbed through the mucosa of the intestinal villa? A. facilitated diffusion B. bulk flow C. active tran

Oksana_A [137]

Answer:

C. active transport driven directly or indirectly by metabolic energy

Explanation:

The intestinal mucosa is the tissue that lines the inner walls of the intestines. It is characterized by the pleated appearance, which facilitates the absorption of nutrients already deferred and the formation of fecal cake. Most nutrients are absorbed by this region through active transport directly or indirectly driven by metabolic energy.

7 0

3 years ago

Give the word and chemical equations for respiration and photosynthesis

svetoff [14.1K]

Answer:

PHOTOSYNTHESIS

carbon dioxide(CO2)+water(H2O)+sun light in the presence of chlorophyll(C55H72O5N4Mg)⇒glucose(C6H12O6)+oxygen(O2)+ATP(energy)

RESPIRATION

Glucose(C6H12O6)+Oxygen(O2)⇒carbon dioxide(CO2)+water(H2O)+oxtgen(O2)

Explanation:

I HOPE THIS WILL HELP YOU :)

5 0

3 years ago

Please help me in my homework (keep it simple,i couldnt find Science ;-; I am sorry) What is environment? What are three main as

meriva

Answer: It is then the space in which the life of living beings and the interaction between them and other things takes place. It is made up of living organisms, abiotic elements and artificial elements. It includes physical, chemical and biological components of the organisms and elements that form it. It is important because it is the place of habitat of humanity, it provides natural elements such as water and food, it provides fuels and raw materials that serve to manufacture artificial things and it contributes to the sustainability of life on the planet.

Explanation:

The environment is a system made up of living organisms (such as animal and plants), abiotic elements (lifeless, such as stones or water) and artificial elements (created by man, such as buildings) that are related to each other and can be modified by human action. It is then the space in which the life of living beings and the interaction between them takes place.

It includes physical, chemical and biological components of the organisms and elements that form it. That is, how is its composition and its function in the environment.

The importance of the environment lies in:

It is the place of habitat of humanity, so it influences the life of human beings and future generations. It is the space where life develops at this time with all living beings and their natural components.
It provides natural elements such as water and food since it offers all its natural resources needed by the human being.
It provides fuels and raw materials that serve to manufacture the artificial things we use daily, to build houses, have light, transport, among many other benefits to exist.
In the environment we find a great biological diversity of plants and animals that help maintain the ecological balance of the earth. This contributes directly to the sustainability of life on the planet. Each organism has a unique role to play.

Therefore, all societies must guarantee their care for their existence and make rational use of all their resources.

7 0

3 years ago