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8 0

You would expect plants to have leaves with little surface area, and develop a different form of carbon storage during photosynthesis that better suits these environments like CAM or C4. They would also have thick cuticles to prevent water loss. Plants in the tundra and the desert generally adapt by growing as low-lying shrubs.

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What causes the seasonal changes in temperature on Earth? A. Because of Earth's elliptical orbit, the Earth is closer to the Sun

gogolik [260]

The answer is C. I️ hope I️ helped :))

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What does it mean to say that mutation is the ultimate source of genetic variation?

Snowcat [4.5K]

When it is said that mutation is the ultimate source of genetic variation it means that it creates several new combinations which is similar to meiosis and fertilization because <span> new alleles and genes appear. It is just about some common points.</span>

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1. Explain the five steps of the scientific method.

RideAnS [48]

1. Scientific method is the techniques that scientists used to carry out investigation process. It is made up of five steps, which are:
a. Observation: this is the stage in which a scientist make an observation to which he did not have an explanation.
b. Formation of a research question: in accordance to observation made, the scientist form a question on which his experiment will be based
c. Formation of hypothesis: at this stage the scientist offers a proposed explanation for the observation which he had made and state what he expects at the end of the experiment.
d. Conduction of the experiment: at this stage the scientist carry out the experiment using appropriate means.
e. Analysis of data and drawing of conclusion: this is last stage of the investigation, at this stage, the scientist analysis the results he obtained and draw a conclusion based on the results of the data.

2. Scientists used scientific method to carry out scientific investigations because the method minimize the influence of bias and prejudice in the experiments that they carry out. The method provides an objective, standardized approach to scientific investigation; this result in reproducible results which can be achieved by other scientists in every parts of the world. The method also helps to minimize errors during investigation.

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3 years ago

Compare and contrast the body of a crayfish with that of an insect. please help

Papessa [141]

Insects have a distinct set of characteristics which all must have if they are insects. They must have three pairs of legs (even though sometimes they may appear different as larvae, such as caterpillars), a set of mouth parts, and a head, thorax, and abdomen.

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3 years ago

A certain Drosophila protein-encoding gene has one intron. If a large sample of null alleles of this gene is examined, will any

Alex

Answer:

a) Yes

b) Yes

c) Yes

d) Yes

Explanation:

a. In the exons?

Yes mutant site will be expected. It will transcript-ed as well and it can be a polypeptide depending on the mutation type.

b. In the intron?

Yes mutant site will be expected. It will be transcript-ed as well and it cannot be a polypeptide

c. In the promoter?

Yes mutant site will be expected. It will not be transcript-ed and it cannot be a polypeptide

d. In the intron-exon boundary?

Yes mutant site will be expected. It will be transcript-ed and it cannot be a polypeptide

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3 years ago