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allochka39001 [22]
3 years ago
11

Deer are eating Mr. Thompson's rose bushes. He puts a new deer repellent point on half of his rose bushes and then waters them.

He uses the same amount of water on the other half of his rose bushes but does not put the repellent on them. What is the control group for his experiment?
A: the rose bushes with deer repellent
B: the rose bushes without the deer repellent
C: the amount of water used
D: the type of brush used
Biology
1 answer:
sammy [17]3 years ago
3 0

Answer:

B. The rose bushes without the deer repellent

Explanation:

In an experiment, the control group is often the group that is not exposed to the independent variable.

The control group is usually used for comparison between it and the experimental groups.

In this experiment, the rose bushes without the deer repellent are the control group.

As the control group, these rose bushes will be compared to the ones that have deer repellent.

The correct answer is B. The rose bushes without the deer repellent

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In developing countries children are needed as a labour force and to provide care for their parents in old age. In these countries, fertility rates are higher due to the lack of access to contraceptives and generally lower levels of female education

Explanation:

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3 years ago
After reading the paragraphs below, answer the questions that follow.
julsineya [31]

The evolution of H. floresiensis is an example of island dwarfism.

Explanation:

H. floresiensis is a species of hominid. It differs significantly than the other hominid species in size though, as it appears to be a dwarfed version of its ancestors and close relatives. Its alleged ancestor is literary twice taller, which brings in the question as to what has triggered such an evolutionary adaptation.

This hominid species lived only on a relatively small island, in isolation. The resources are very limited, and the climate is warm and humid all year around. As seen in many species of animals, when individuals get into such an environment, they tend to experience either island dwarfism, or island gigantism. The island dwarfism tends to be common among large and medium sized species, while the island gigantism tends to be more common among the small species.

When the ancestors of H. floresiensis ended up in this environment, it was advantageous for them to smaller. The reason for that is that smaller bodies require less nutrition, and are also producing less heat.

Learn more about the effects an island has on the animals brainly.com/question/12372014

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7 0
4 years ago
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Sati [7]

Answer:

The correct answer would be option D) no gametes.

Explanation:

The ABC model of the flower was formulated to describe the collection of genetic procedures that determines floral organs in several plants. These species consist of four whorls which are sepals, petals, stamens, and carpels. These whorls are expressed by the expression of a number of genes present in each whorl or verticli.

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Thus, the correct answer would be option D) no gametes.

3 0
3 years ago
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