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Mrac [35]
3 years ago
11

Which of the following is a metal?

Biology
2 answers:
Nuetrik [128]3 years ago
8 0

Answer:

B) iron (fe)

Explanation:

Darina [25.2K]3 years ago
4 0

Answer:

B, iron (Fe). C, calcium (Ca) is also a metal.

Explanation:

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Substance A and substance B are mixed together. To separate the mixture, water is added, and substance A is filtered out. Then,
Sveta_85 [38]

The correct answer would be that substance A is rice, and substance B is sugar.

For substance A to be filtered out, it means that A is a water-insoluble substance and for substance B to be recoverable by evaporating off the water, it means that B is water-soluble.

Thus, A can neither be sugar nor alcohol because neither can be recovered by filtration. Also, B can neither be coffee nor alcohol because they can not be recovered as residue through evaporation of water.

Therefore, the only correct answer is that substance A is rice, and substance B is sugar because rice can be filtered out from water while the water-soluble sugar can be recovered by evaporating the water.

More about separating mixtures here: brainly.com/question/2827008

6 0
3 years ago
How do members of a population interact with each other?
m_a_m_a [10]

Answer:

Mutualism

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When the two different population species interact in such a manner that it is beneficial to each other, then this form of interaction is called mutualism.

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According to Selye (1956, 1974), which stage of reaction to stress stimulates the body to send messages from the hypothalamus to
Brums [2.3K]

Answer:

The alarm reaction stage

Explanation:

According to Selye, there are three stages of reaction to stress conditions. These are namely the alarm reaction stage, the resistance stage, and the exhaustion stage.

The alarm reaction stage is the first stage of stress reactions which includes perception of stress conditions. The hypothalamus sends signals to the associated glands and organs to prepare for the defensive responses.

The adrenal gland receives a signal to secrete the stress hormones while organs such as the liver are signaled to increase the glucose formation which in turn would serve as fuel during stress conditions.

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Environmental impact of stem cells
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embryonic stem cells could serve as a model to evaluate the physiological effects of environmental pollutants efficiently and cost-effectively.

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Activation energy is only required to start an exothermic reaction. <br> a. True <br> b. False
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          The answer is False

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