List four different primary energy resources that humans have used.

Biology

2 answers:

Dmitry_Shevchenko [17]3 years ago

8 0

Answer:

the four primery energy resources are fossile fuel petrolium natural gas and coal hope ur help and mark me brainlist

Butoxors [25]3 years ago

4 0

Answer:

हिंदी में खोजें

मानव द्वारा उपयोग किए जाने वाले चार विभिन्न प्राथमिक ऊर्जा संसाधनों की सूची बनाएं

Crude oil, coal, wind and natural gas are all primary energy sources. Electricity is not a primary energy source, it's an energy currency (see electricity as an energy currency for an in depth discussion). Likewise, secondary fuels are also energy currencies and aren't primary energy sources, they must be made.

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A disease called phenylketonuria causes mental problems, reduces skin pigmentation, and also affects the coloration of urine. Wh

swat32

Answer:

Pleiotropy

Explanation:

Pleiotropy is a genetic condition in which a single gene conditions the expression of multiple phenotype. There are different types of pleiotropy depending on the underlining mechanism

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selectional pleiotropy
antagonistic pleiotropy

Phenylketonuria is a disease characterized by increased level of amino acid phenylalanine in the blood. It caused by mutation to the gene responsible for breaking down phenylalanine in the blood. Elevated level of phenylalanine causes other issues such as mental problems, urine coloration and reduction in skin pigmentation. This is a clear case of pleiotropy.

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lilavasa [31]

Answer:

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Explanation:

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In a certain plant species, thick-shelled seeds are caused by the dominant allele T, while thin-shelled seeds are caused by the

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Answer: tt

Explanation: If the allele for a trait is recessive, it has to have 2 of that recessive allele to show that trait.

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