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Ksju [112]
3 years ago
5

What are traces or remains of organisms that lived in the past

Biology
1 answer:
liq [111]3 years ago
6 0
D.) Fossils.      Fossils are skeletons of creatures that lived in the past. 
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The use of harmful substances in food production​
Fittoniya [83]

Explanation:

The use of pesticides can dramatically increase crop production and ensure a higher quality of produce. However, pesticides are also toxic chemicals designed to kill agricultural pests, and some can cause problems if they are consumed by humans in large amounts. ... Residues of these drugs can also be hazardous to humans.

8 0
3 years ago
Duchenne Muscular Dystrophy (DMD) is an X-linked recessive trait that causes muscular weakness, deterioration of muscle tissue,
Ronch [10]

Answer:

The correct answer is - XDXd and XD Y

Explanation:

Sex-linked disorders are the disorders that are expressed only when there is two copy of the mutated allele or have not masked by the dominant allele of the gene. In DMD, the dominant allele is XD and the mutated allele is Xd. To express it there are the following genotype possible-

in women XdXd, and in men XdY, so these two genotypes are not possible for the parents in this case. If a mutated allele is present with the dominant allele it will be considered as carrier women but diseased will not be found in them.

So the correct genotype would be

mother: XDXd ( a carrier woman)

father : XDY (normal man)

7 0
3 years ago
What does the "mRNA destroyer" do?
LiRa [457]

Answer:

RNA polymerase creates mRNA when it is is in the starter called Positive transcription factor 5. What does the “mRNA destroyer” do? It destroys the mRNA when there is enough mRna 6. ... Negative transcription doesn't allow mRNA to produce more 7.

Explanation:

7 0
3 years ago
Which choice below best describes the factors that can affect an ecosystem’s stability?
kirill [66]

Predator and Prey relationships would have the most effect on an ecosystem's stability because they keep a limit number on the opposing population (ex. rabbit population can only get so high because wolves keep eating them / wolf population can only be so high because there is't enough rabbit to eat)
4 0
3 years ago
Study this image.
Alex_Xolod [135]

Answer:

<h2>a rift valley is forming</h2>

Explanation:

6 0
2 years ago
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