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4vir4ik [10]
2 years ago
13

Fill a small bowl with 1-2 inches of water. Take a sewing needle and place it on a tissue paper. Place the tissue paper with the

needle on the water in the flat dish. Let the tissue sink to the bottom of the bowl and record your observations of the needle.
Biology
1 answer:
kobusy [5.1K]2 years ago
5 0

The sewing needle should float in the water if placed on a horizontal angle if I remember properly.

I hope this helps in some way.

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The graph shows the populations of wolves and mountain lions in five different counties in Montana. Wolves and mountain lions co
Lynna [10]

Answer:

The answer is B trust me if you want its your dicision

Explanation:

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3 years ago
In mice, a male and female are mated, both with long ears. All female have long ears but half the males bave short ears and half
rjkz [21]

If you have both parents with long ears and some of the offsprings have short ears, you can say both parents are heterozygous for this. Both have a dominant (long ear), and a recessive allele (short ear).

To prove this, you can draw a Punnett square, and you'll see the probabilities of the offsprings.

8 0
2 years ago
Humans can take up available space, disrupt systems, or change water supplies in an ecosystem. What conclusion can you make abou
alexandr402 [8]

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Human activities affect the flow of energy and matter in an ecosystem and alter the energy balance in ecosystems through the unsustainable nature of what they do.  The energy flow is affected in several ways as a result of pollution, overpopulation, deforestation, burning fossil fuels, etc. Such changes have stimulated soil erosion, climate change, causing water unfit to consume, poor quality of air and so on. When humans cause a change in the energy balance, they impact the ability of the ecosystem to respond and adapt to changes in the environment. It is like getting a cut, but it never heals and grows bigger instead.

4 0
2 years ago
Using the graphs below, which group of moths is better adapted to survive the hunting cycle?
Mrac [35]

Answer:

Using the graphs below, which group of moths is better adapted to survive the hunting cycle?

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Explanation:

3 0
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Read 2 more answers
Which of the following is an example of specific immunity?
zvonat [6]

Answer:

Immunity to Small Pox

Explanation:

Over the years, Europeans had built up an immunity to smallpox because many had contracted the disease and still survived. As the population grew children were born with some immunity to the disease. When the Europeans arrived in the Americas, and smallpox spread around the native peoples, the Europeans did not contract the disease because they were immune. However, since the natives were not immune, they slowly died of due just to the disease as well as some parts of the war between the europeans.

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