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3 years ago

Explain Lever mechanism .

1 answer:

5 0

On the basis of the location of fulcrum, load and effort, the lever is divided into three types. It is one of the six simple machines identified by Renaissance scientists. A lever amplifies an input force to provide a greater output force, which is said to provide leverage.

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If a organism has a diploid number of 44, how many chromosomes does it have? *

rosijanka [135]

I think it is 24 because it just is

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3 years ago

What is a complex Sugar? Please a specific answer(make more sense)

kolezko [41]

Answer:

Complex carbohydrates are MADE up of sugar molecules that are strung together in long complex chains, complex carbohydrates are found in food like peas, beans, whole grains and vegetables.

Explanation:

Both SIMPLE and COMPLEX carbohydrates are turned into glucose (blood sugar) in the body and are used as energy.

I really hoped this helped some, I tried to make it specific :[

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3 years ago

In addition to providing food why are plants important to human society give three examples

TEA [102]

They produce oxygen they are used as shelter, they are used for blocking the shade, they sustain other animals that sustain the planet and us.

6 0

3 years ago

masteringbio JFor each of the studies described below, indicate if it is hypothesis driven and whether the scientist is employin

juin [17]

Incomplete question. The remaining part of the question read;

Words in the left column:

Yes
No
Observational
Manipulative

1. A physiologist incubates eggs in the lab at a range of temperatures to see what temperatures produce males and what temperatures produce females.

2. A biologist predicts that shade might influence ground temperature, and therefore turtle sex ratios. He records the sex ratio of turtle hatchlings in shaded and unshaded regions

3. An ecologist predicts turtles grow larger when no predators are around. She places turtles in an experimental pond system where half the ponds have predators and half the ponds have had the predators removed.

4. A climatologist predicts that concentration of CO2 in a city will be negatively correlated with the amount of wind in that city. He collects data and looks at the amount of CO2 in a city as a function of the wind speed in the city.

5. A sociologist conducts a survey in Hawaii to describe people's attitudes about global climate change.

6. A scientist determines the average wind speed, and variation in the amount of wind, in a number of locations to see which locations would be most suitable for wind turbines

Answer/Explanation:

1. Hypothesis-driven? Yes!

Observational or Manipulative? Observational.

We can make this conclusion here that the physiologists' research is hypothesis-driven since we are told he wanted to "see what temperatures produce males and what temperatures produce females." In other words, he wanted to know whether the temperature used in incubators can influence the sex of an egg by means of observation.

2. Hypothesis-driven? Yes!

Observational or Manipulative? Observation.

3. Hypothesis-driven? Yes!

Observational or Manipulative? Manipulative.

We can make the conclusion that is the ecologist used the manipulative method in her research since she decided to place the turtles in two different types of ponds; one where half the ponds have predators while in the other the pond the predators have been removed. In other words, she manipulated the independent variables.

4. Hypothesis-driven? Yes!

Observational or Manipulative? Observational.

Note, the use of the word, "predicts" in most instances underscores the tone of hypothesis-driven research, hence we can say Yes! And remember, we are told the researcher "collects data", meaning he is merely observing differences that occur naturally.

5. Hypothesis-driven? No!

Observational or Manipulative? Observational.

6. Hypothesis-driven? No!

Observational or Manipulative? Observational.

5 0

3 years ago

Why is latitude a factor in the uneven heating of Earth's surface?

Maru [420]

Answer:

deflection of the winds to the right in the southern hemisphere was caused by uneven heating of the earth's surface.

hope it helped

Explanation:

8 0

3 years ago

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