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Vladimir [108]
2 years ago
12

A biology class wanted to study the effect of different materials on the melting rate of ice. They placed pieces of ice, each wi

th a mass of 10g, onto trays. Group 1 was covered in plastic, group 2 was covered in paper, group 3 was covered in aluminum, and group 4 remained uncovered.
Each piece of ice was allowed to melt for 15 minutes. Then final mass of the ice, minus the melted water, was recorded at the end of the experiment.


Which of the following is the control group in this experiment?


A. group 3

B. group 1

C. group 2

D. group 4
Biology
2 answers:
ludmilkaskok [199]2 years ago
7 0

Answer:

its dez nuts

Explanation:

Andreyy892 years ago
3 0

Answer:

Group D

Explanation:

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In cattle, codominance of the allele for a red coat (R) and the allele for a white coat (W) results in offspring with a roan coa
mario62 [17]

Answer:

Genotype ratio: 1 (RR) : 2 (RW) : 1 (WW)

Phenotype ratio: 1 Red : 2 Roan : 1 White

Explanation:

Codominance is a kind of inheritance pattern in which both alleles are equally dominant in a gene. This means that both alleles when in a heterozygous state will be simultaneously expressed. According to this question, allele for a red coat (R) and the allele for a white coat (W) results in offspring with a roan coat (RW) in cattle.

Hence, in a cross between a a roan cow (RW) and a roan bull (RW), the following gametes will be produced: R and W.

Using these gametes in a punnet square (see attached image), the offsprings with the following genotypes will be produced: RR, RW, RW, WW.

Therefore, based on the results of the cross;

Genotype ratio: 1 (RR) : 2 (RW) : 1 (WW)

Phenotype ratio: 1 Red : 2 Roan : 1 White

7 0
3 years ago
What is the goal of a conclusion?
kirill [66]

The goal of a conclusion is to state whether the hypothesis was supported by the data

Explanation:

A conclusion is a type of small paragraph where we explain the overall outcome of an experimental procedure and after it mention the proposed hypothesis at the starting of the experiment was correct or not.

These discussions which is mentioned in the conclusion is helpful for further experiments or also test that could be done to support your findings in the present experiment. This part could also be called perspectives.

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Louis Pasteur contributed all of the following to Germ Theory EXCEPT
motikmotik

microbes made beverage and food go bad

7 0
2 years ago
Describe the weather factors that are important in determining where plants and animals can exist in an area.
nekit [7.7K]

Answer:

rain is very important for life in certain areas, this is why you see little life in deserts and even they need rain occasionally. more rain will lead to more life, first, it will be the plants that move in, then once they grow, vegetation eaters will move in, then after that meat-eaters will move in to eat those creatures and the ecosystem will flourish.

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Integrated science<br>plant reproduction​
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Flowering plants reproduce sexually through a process called pollination. The flowers contain male sex organs called stamens and female sex organs called pistils. Cross-pollination happens when the wind or animals move pollen from one plant to fertilize the ovules on a different plant.

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