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marta [7]
3 years ago
15

In 1859, Charles Darwin described a model of how living things change over time. He described this model and the evidence that s

upported it in a book called On The Origin of Species. Which scientific term is used to describe a testable model that seeks to explain natural phenomena?
A)data
B)hypothesis
C)observation
D)theory
Biology
1 answer:
ss7ja [257]3 years ago
4 0
The answer is D.) theory
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After being warmed by incoming solar radiation throughout the day, the Earth emits _____ radiation, which is trapped near the Ea
enot [183]
There must be a balance between the flow of energy into the atmosphere and the flow of energy out of the atmosphere and back to space.<span>After being warmed by incoming solar radiation throughout the day, the Earth emits infrared radiation, which is trapped near the Earth’s surface by carbon dioxide.This radiation is called thermal radiation.</span>
8 0
3 years ago
A portion of a field has drained more rapidly than the rest, leading to drought conditions in that area several days before the
Andrew [12]

Answer:

Due to sloppy nature of the field.

Explanation:

This problem of rapidly drainage can be solved if the field should leveled because the portion is rapidly drained due to sloppy nature of the field. Sloppy nature of land moves water at the faster rate from higher elevation to lower elevation. We can see in tillage practices, the farmers used levelers in order to level the field in order to provide even resources such as fertilizers and water. So we can say that this problem can be solved if the field will be leveled.

3 0
2 years ago
Can someone please help on these two question Please I don't get this at all I'm really confused
marissa [1.9K]
Alleles are letters that represent dominant and recessive traits.

A capital letter represents a dominant trait
A lowercase letter represents a recessive trait.

Dominant traits over shadow the recessive ones. This is known as complete dominance.

Referring to your questions let's us the alleles HH, Hh, and hh for the height of the pea plants.

But what do those letters mean?

HH = homozygous dominant (Tall)
Homo means same.

hh = homozygous recessive (Short)

Now this is different: here's Hh.
There's a capital AND lowercase letter.
This means that the plant carries the gene for tall and short plants, and can pass on either trait to the offspring.

BUT the dominant always over shadows the recessive. So Hh is a tall plant.

Hh = heterozygous (hybrid) (Tall)
You can interpret hetero meaning different.

Now I hope you're with me!

For question two it asks if a short plant can ever be a hybrid.
Referring to what I just said, that answer would be no.
Because there is no dominant trait to over shadow the recessive.

And short plants have the hh alleles, and they are homozygous NOT heterozygous (hybrid).

I hope this helps, and makes sense! If you have any questions please let me know. Genetics can be confusing.
8 0
3 years ago
Read 2 more answers
I Using the key choices, identify the cell type(s) or blood elements that fit the following descriptions. Insert the correct ter
gregori [183]

Answer:

  1. Neutrophil
  2. Neutrophil
  3. Eosinophil
  4. Basophil
  5. Red blood cell
  6. Monocyte
  7. Neutrophil
  8. Monocyte
  9. Lymphocyte
  10. Megakaryocyte
  11. Formed elements
  12. Eosinophil
  13. Basophil
  14. Lymphocyte
  15. Red blood cell
  16. Plasma
  17. Monocyte
  18. Basophil

Explanation:

A. Red blood cell: Blood cell that is a product of the medulla. These cells contain hemoglobin that carries oxygen from the lungs to the rest of the body.

B. Megakaryocyte:  Big cell easy to recognize for its size. Differs from other cells for being polyploid, growing by endomitosis, and being bigger. They have important biological functions. The most important one is the formation of plaquettes, necessary for hemostasia, damaged vessels reparation, and tissue healing.

C. Eosinophil: Granulosites. Immune System cells, active during infections, pathologies, inflammations, and allergies.  Originated in the medulla and transported to the blood and organs. One of their functions is to defend the organisms from parasite infections, helping to destroy the pathogen.

D. Basophil: Granulosites. Immune System cells.  in the medulla and transported to the blood. Only when there are parasite infections they can be present in tissues and organs. They release substances such as histamine that make possible the inflammatory process.

E. Monocyte: Agranulocyte phagocyte. Originated in the medulla and transported to the rest of the body. They differentiate into macrophages in tissues. They defend the body from bacteria and viruses. When monocyte values are elevated, usually means that there is an important process of infection.

F. Neutrophil: Phagocytic Leucocytes polymorphonuclear found in the peripheric blood. Compose the first defense line against bacterial and fungal infections.  Product of the medulla and transported to the blood. They are the first to arrive at the affected tissue, followed by lymphocytes and macrophages.    

G. Lymphocyte: Leucocyte. There are two types of lymphocytes: B cells, which can produce antibodies in the presence of bacteria, viruses, and toxins. T cells can destroy infected cells from the body. They all circulate in the blood.

H. Formed elements: Elements that might be found suspended in the plasma. These include all the mentioned cells and cell fragments      

I. Plasma: Transparent, acellular, and kind of yellow liquid that represents 55% of the blood volume.            

5 0
2 years ago
_____ secrete chemicals that cause pores to form in the membrane of abnormal cells, leading to cell death.
qaws [65]
Hi, Natural Killer Cells secrets chemicals that cause pores to form in the membrane of abnormal cells, leading to cell death.
Hope this helps, please hit the thanks button and brainliest.
7 0
3 years ago
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