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VLD [36.1K]
3 years ago
13

Energy must be transformed in ecosystems because _______.

Biology
2 answers:
Anna71 [15]3 years ago
8 0

The answer is D, All of the above.

I took the test, and it said D was correct.

I hope this helps! Have a nice day :)

Wewaii [24]3 years ago
3 0
The answer is D.)All of the above. 
Its D because, energy can not be created or destroyed, all energy has to go somewhere. And an organisms energy must come from somewhere because you cant make it, its just there. 
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________ development involves growth and changes in the body and brain, the senses, motor skills, and health and wellness.
iogann1982 [59]
PHYSICAL DEVELOPMENT involve growth and changes in ......... Physical development in humans starts from infancy up to late adolescent. Features of physical development include: development of motor skills, puberty, development of muscle and physical coordination, etc.
5 0
3 years ago
Given is a strand of DNA, fill in the corresponding RNA strand and find which amino acids that strand codes for.
prohojiy [21]

Answer:

A-U-G-<u>C-U-A</u>-A-U-A-<u>C-A-G</u>-U-A-G==== RNA

AUG= Start, CUA= Leu, AUA= Iso,  CAG= Glu, UAG=Stop (AMINO ACIDS)

Explanation:

these are right i know for a fact.. had this unit for school

4 0
2 years ago
Which evolutionary mechanism changes genotype frequencies but does not change allele frequencies?
Montano1993 [528]

Assortative mating is the evolutionary mechanism that changes genotype frequencies but does not change allele frequencies.

Assortative mating is the type where two individuals mate with each other on the basis of their similarities and dissimilarities. This is a different phenomenon than the random mating that occurs by chance. Assortative mating can be used to increase the number of organisms of a population containing a certain trait.

Allele is the alternative form of a gene. It arises due to mutations. A gene can have more than one types of alleles. However, usually a gene only has one allele. The alleles are found at the same location of the homologous chromosomes.

To know more about assortative mating, here

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6 0
1 year ago
A student is standing 8 m from a roaring truck engine that is measured at 20 db. The student moves 4 m closer to the engine. Wha
icang [17]

Answer:

80 dB

Explanation:

Sound intensity is inversely proportional to the square of the distance traveled by the sound.

Thus;

r1^2 divide by r2^2 = L2divideL1

where r= distance (m)

L= sound intensity (decibal dB)

8squared divide by 4 squared = L2 divide 20 dB

L2 = 4 × 20

L2= 80 dB

This means that the sound is increased from 20 dB to 80 dB.

3 0
3 years ago
Read 2 more answers
Terrance, whose birth mother drank alcohol heavily throughout pregnancy, has a thin upper lip, short eyelid openings, a small he
Alenkasestr [34]

Answer:

fetal alcohol syndrome

Explanation:

  • Fetal alcohol syndrome is a syndrome that is a group of different symptoms or conditions that appear in a person whose mother consumed alcohol during pregnancy.
  • The different problems that a person may suffer from including small head size, short height, thin upper lip, smooth philtrum, etc.
  • Besides this, the mental health of the person is also affected and thus, the person may have memory impairment, social anxiety, etc.
  • Since it has been mentioned that Terrance's mother consumed alcohol throughout pregnancy and the symptoms that Terrance shows also are similar to that of a person suffering from Fetal alcohol syndrome, it can be concluded that he is suffering from this condition.
7 0
3 years ago
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