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olga_2 [115]
3 years ago
7

Please someone help me with this

Biology
1 answer:
fiasKO [112]3 years ago
8 0

Answer:

Explanation:

1. a. Sunlight hitting the Earth's surface is the source of all energy in the pyramid.

b. 25,500 kcal is provided by this source to a square meter per year.

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Hydrogen is usually found on earth.
Goshia [24]
I believe it is C. as liquid hydrogen. 
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Thalidomide and l-dopa, shown below, are examples of pharmaceutical drugs that occur as enantiomers, or molecules that _____.
klemol [59]

Answer;

-are mirror images of one another.

Thalidomide and l-dopa, shown below, are examples of pharmaceutical drugs that occur as enantiomers, or molecules that are mirror images of one another

Explanation;

-Enantiomers are chiral molecules that are mirror images of one another. Furthermore, the molecules are non-superimposable on one another. This means that the molecules cannot be placed on top of one another and give the same molecule. Chiral molecules with one or more stereocenters can be enantiomers.

Enantiomers have identical chemical and physical properties in an achiral environment. They rotate the direction of plane polarized light to equal, but opposite angles and interact with other chiral molecules differently.

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3 years ago
Scientists have recently discovered what could be the largest and oldest living organism on earth, a giant fungus that is an int
k0ka [10]
Th e original sentence is correctly written. Th e giant fungus is described as an interwoven filigree spawned … some 10,000 years ago and extending for more than 30 acres. Th e present participle extending parallels the past participle spawned. A Correct. Th is sentence has the participles spawned and extending in a correct parallel construction. Spawned refers to something that happened in the past, while extending refers to something that continues into the present. 
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6 0
3 years ago
According to the passage, which of the following topics of study was the most crucial to his final analysis?
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Answer: The study of plant varieties.

Explanation:

This question relates to the studies that Gregor Mendel, founder of modern genetics, performed at the University of Vienna.

Experimenting on pea plants, Gregor Mendel was able to establish a lot of the rules of heredity that we know today even though his research was not fully appreciated or understood during his own life.

He credited the study of plant varieties to have been most crucial to his final analysis because farmers had been crossbreeding varieties for millennia to bring about better traits in plants.

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Which process makes it possible for the major organs of the body to be formed by week 10 of human development
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Human development is started off by the process of fertilization in which the sperm and ovum fuse to form zygote. In human beings fertilization takes place in the oviduct of the female. The zygote that is formed undergoes mitosis to form the embryo.  

The embryo then gets embedded in the uterine walls. It continues dividing and differentiating  into several organs. Almost all of the organs are formed by tenth week of pregnancy even though they aren’t fully developed.  

The embryo has three layers namely ectoderm, mesoderm and endoderm. Ectoderm develops into outermost skin layer, central and peripheral nervous system, eyes and inner ears. Baby’s heart and circulatory system is formed from the mesoderm and the baby’s lungs and intestine develop from the innermost layer called endoderm.  

7 0
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