BIOLOGY MIDDLE SCHOOL

Which of the following is an example of natural erosion?a.
ice forming in cracks of rocks
b.
acid rain falling on sidewalks
c.
waves washing over rocks on the beach
d.
water washing away soil in an area used by off-road vehicles

Answers

Answer 1
Answer: The most natural form of erosion in the examples is C, waves washing over rocks on the beach. Formation of ice is not a form of erosion and options C and D involve factors introduced by humans. In B, this is the acid rain, and in D it is the erosion of soil that occurs due to the off-road vehicles.
Answer 2
Answer:

Answer;

C. waves washing over rocks on the beach

Explanation;

-Erosion is a natural process that forms part of the lifecycle of sites, resulting from the action of wind or water. It is a geological process in which earthen materials are worn away and transported by natural forces such as wind or water.

-Example of erosion; Wind carries small pieces of rock awayfrom the side of a mountain, waves washing over rocks on the beach, etc.

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How the metabolism of hetero trophy differs from that of autotrophs

Answers

In many functions of a living organism, it cannot make its own energy. It uses energy from its environment, retrieves and converts into a usable and edible matter. Organisms that can do this process is the autotrophs, they can facilitate photosynthesis which they gather energy from the sun, water and carbon dioxide in order to create energy by then, the transfer of this energy to other organism is played by the food chain –food web.   



The options in the question contain both autotrophs and heterotrophs.
(a) A giant redwood tree = Autotroph
(b) A spider = Heterotroph
(c) A rose bush = Autotroph
(d) A mushroom = Heterotroph
(e) A blue whale = Heterotroph
Autrophs are the organisms that have the capacity to form their own food from inorganic substances like the carbon dioxide. 
Heterotrophs are the organisms that cannot produce their own food but depends on other animals or plants for their nutritional needs. 

PLEASE HELP ME! ASAP In the diagram below of the water cycle, what does letter C show?




A. Condensation
B. Precipitation
C. Collection
D. Evaporation

Answers

the answer is B.Precipitation.it is raining

What three things did the original cell theory propose and wht three things does the current cell theory propose?

Answers

 (1) All living things are made up of cells, (2) Cells are the smallest units (or most basic building blocks) of life, and (3) All cells come from preexisting cells through the process of cell division. Cells were first observed by the natural philosopher Robert Hooke in 1665. Though many scientists contributed to the understanding of cells, Matthias Schleiden and Theodor Schwann are credited with describing the first two parts of the cell theory in 1839, and Rudolf Virchow with later contributing the third. Today, the cell theory is considered the foundation of biology.

Is the following sentence true or false? It is easier to synthesize new elements with very large atomic numbers.

Answers

Answer (True/False):

FALSE

Explanation:

Atomic number defines the number of electrons and protons in an atom. where as synthesizes means to produce something chemically. Keeping both the statements in view, it is not easier to synthesize new elements with a large number of electrons and protons. Though this process can be done for the small atomic numbers.
No, not particularly. For those beyond a certain point, you actually need to create the precursors first and then combine them again.

5) How are Parkinson's disease and ALS similar?A) Both diseases are communicable.
B) Both diseases affect muscle control.
C) Both diseases can be prevented with vaccines.
D) Both diseases are caused by an unhealthy lifestyle.

Answers

B) because Parkinson's disease make the muscles "shake" and ALS weakens the muscles.

EsThe process of transcription and splicing of mRNA is shown above. What statement accurately describes these two steps?
Transcription and splicing only occur in eukaryotic cells. Transcription and
splicing both occur in the nucleus.
Transcription and splicing only occur in prokaryotic cells. Transcription and
splicing both occur in the cytosol.
Transcription occurs only in prokaryotic cells in the cytosol white splicing
occurs only in eukaryotic cell sin the nucleus.
Transcription and splicing only occur in eukaryotic cells. Transcription
occurs in the nucleus while splicing occurs in the cytosol.

Answers

Answer:

The correct answer is "Transcription occurs only in prokaryotic cells in the cytosol white splicing occurs only in eukaryotic cell in the nucleus".

Explanation:

Prokaryotic cells and eukaryotic cells could be differentiated by the site at which transcription occurs (the synthesis of mRNA from a DNA template). In prokaryotic cells transcription occurs in the cytosol, while in eukaryotic cells transcription occurs in the nucleus. This is easy to remember since prokaryotic cells do not have a nucleus. Also, splicing occurs only in eukaryotic cells in the nucleus. Splicing is the removal of the non coding regions of mRNA (introns), which happens frequently in eukaryotic cells and in prokaryotic cells is a very rare event.

Answer:

Transcription only occur in eukaryotic cells. Transcription and slicing both occur in the nucleus.

Explanation:

Transcription and splicing only occur in eukaryotic cells. Transcription and splicing both occur in the nucleus. Splicing of exons and intron removal is strictly a eukaryotic phenomenon. Prokaryotic genomes are smaller and do not contain introns. Both of these processes occur in the nucleus.
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