Answer:
A-Horizon and O-Horizon.
Explanation:
O-Horizon is the top layer of the soil made up almost entirely by decomposed organic matter. A-Horizon its found below and is where the seeds germinate, it is made of hummus combined with mineral particles.
The topsoil has the highest concentration of organic matter and is where Earth´s biological activity occurs.
I hope this answer helps you.
reproductive
immune
skeletal
lymphatic
digestive
muscular
nervous
Endocrine
excretory
respiratory
circulatory
integumentary
Answer:
1. Circulatory
2. Digestive
3. Lymphatic
4. Muscular
5. Integumentary
6. Skeletal
7. Respiratory
8. Immune
9. Reproductive
10. Excretory
b. They exhibit metastasis.
c. They respond to growth inhibitors.
The cancer cells exhibit the property of metastasis. Option B is correct.
Metastatic cancer is a type of cancer that spreads from one area of the body to another. Many types of metastatic cancer are also called stage IV cancer. Metastasis is the process of cancer cells spreading to other areas of the body. The cells spread away from the place of origin of the tumor to other parts of the body.
Metastasis involves the following stages: 1. Local Inference of Tumour Cells 2. Transendothelial Migration of Cancer Cells into Vessels 3. Survival in the Circulatory System 4. Extravasation 5. Proliferation in Competent Organ Systems.
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B. Active transport is the only form of transport that requires the use of protein carriers.
C. Active transport requires the cell to expend energy, while passive transport does not.
The difference between active transport and passive transport is that active transport requires the cell to expend energy, while passive transport does not, which is option C.
Cell membranes are selectively permeable barriers that allow certain materials to pass through while blocking others. In order to cross the membrane, materials move through transport processes. There are two main types of transport: active and passive. Passive transport is the movement of materials across the cell membrane without the input of energy. This includes diffusion, osmosis, and facilitated diffusion. These processes are driven by a concentration gradient, which is the difference in concentration of a substance between two areas. Active transport, on the other hand, is the movement of materials across the cell membrane that requires the cell to expend energy.
Hence, the difference between active transport and passive transport is that active transport requires the cell to expend energy, while passive transport does not, which is option C.
Learn more about active transport and passive transport here.
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