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jeyben [28]
2 years ago
9

Earth is a closed system for matter. This

Biology
1 answer:
bekas [8.4K]2 years ago
3 0

Answer:

A

Explanation:

The correct answer is A. constant since it's not gaining or losing matter.

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A dog breathes out CO2 and a tree releases O2. How are the dog and the tree connected in the oxygen cycle?
Hitman42 [59]
A dog breathes in oxygen and then releases carbon dioxide when he exhales. Conversely, a tree gives off oxygen and takes in carbon dioxide. So the breath of the dog sustains the tree while the output of oxygen for the tree sustains the dog.
6 0
3 years ago
Explain why DNA is called a molecular clock.
hammer [34]

The molecular clock is a figurative term for a technique that uses the mutation rate of biomolecules to deduce the time in prehistory when two or more life forms diverged. The biomolecular data used for such calculations are usually nucleotide sequences for DNA or amino acid sequences for proteins.

Explanation:

5 0
4 years ago
A student conducted an experiment that used two rose plants to determine if a liquid formula for fertilizer was better than a dr
Tanzania [10]

The teacher most likely asked for additional trials because it was necessary to see data from more plants before the conclusion could be accepted.

Explanation:

  • Any experiment should have multiple trials given so that accuracy of the result could be obtained.
  • Repeating same experiments tests the consistency of a particular result and makes sure that the results will not be effected by random events occurring within the system or surrounding.
  • Thus the conclusion becomes more precise and accurate.

3 0
4 years ago
Heterozygous alleles are found on ________ chromosomes.
serg [7]
I believe it is gene sex chromosones...
4 0
3 years ago
Read 2 more answers
You explain that this is possible
sergiy2304 [10]

Answer:

Incomplete dominance

Explanation:

Incomplete dominance is a type of inheritance pattern in which two alleles of a gene are not dominant over one another but rather form an intermediate phenotype, which is a blending of both parental phenotypes. It is a non-mendelian inheritance i.e. does not conform to Mendel's inheritance principles.

An example of incomplete dominance is that of the alleles of a flower color gene in four o'clock plant. The alleles for white (W) and red (R) are incompletely dominant over one another, hence, they form an intermediate PINK phenotype (RW).

5 0
3 years ago
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