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3 years ago

Which statements accurately describe elements? Check all that apply.

Chemistry

2 answers:

svet-max [94.6K]3 years ago

7 0

Answer:

Elements are made up of only one type of atom.
Each element has a unique chemical symbol.
Elements can be identified by their atomic number.

Explanation:

alex41 [277]3 years ago

4 0

Answer:

2,3,4

Explanation:

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Why is predicting our future oil supply controversial and involves some uncertainty?

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4 years ago

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Direction. Compare genotypic and phenotypic ratios for a typical Mendelian Trait. Let D= dominant allele and d= recessive allele

Finger [1]

The comparison of the genotypic and phenotypic ratios of the crosses are as follows:

DD x Dd:

50% DD, 50% Dd (genotype); 100% Dominant

DD x dd:

100% Dd (genotype); 100% dominant

Dd x Dd:

50% Dd, 25% DD, 25% dd (genotype); 75% dominant, 25% recessive (phenotype)

Dd x dd:

50% Dd, 50% dd (genotype); 50% dominant, 50% recessive (phenotype)

<h3>How to find genotypic and phenotypic ratios?</h3>

In genetics, the genotype is the genetic constituent of an organism while the phenotype is the expressed trait.

According to this question, the genotypic and phenotypic ratios of cross combinations involving two alleles D and d is given.

The genotype of the offsprings of each cross is as follows:

DD x Dd: DD, DD, Dd, Dd
DD x dd: Dd, Dd, Dd, Dd
Dd x Dd: DD, Dd, Dd, dd
Dd x dd: Dd, Dd, dd, dd

Therefore, the genotypic and phenotypic ratios of these crosses are as follows:

DD x Dd:

50% DD, 50% Dd (genotype); 100% Dominant

DD x dd:

100% Dd (genotype); 100% dominant

Dd x Dd:

50% Dd, 25% DD, 25% dd (genotype); 75% dominant, 25% recessive (phenotype)

Dd x dd:

50% Dd, 50% dd (genotype); 50% dominant, 50% recessive (phenotype)

Learn more about genotype and phenotype at: brainly.com/question/9305691

#SPJ1

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2 years ago

How to balance an unbalanced equation <br><br> C6H6+O2 yields CO2+H2O

storchak [24]

C6H6+15O2=12CO2+6H2O

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4 years ago

What is the percentage composition of each element in dinitrogen monoxide, N2O?

Kitty [74]

The correct answer is C :)

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3 years ago

Read 2 more answers

Idk how to do this at all!!!

sergey [27]

Hello there!

I am not really sure which part you are talking about but let me answer some of them.

First, you need to read the information they gave you about glucose etc..

13- What is produced in photosynthesis?
"Photosynthesis is essential for all life on earth, because it provides food and oxygen."

Thus, the answer is: Photosynthesis produced food and oxygen.

14- What is the glucose used for?
"The glucose produced is used by the plant for energy and growth."

Thus, the answer is: The glucose used for energy and growth of the plants.

15- What is the oxygen used for?
"The oxygen produced is released into the air for us to breath."

Thus, the answer is: The oxygen used for us to breath.

I hope this helps!

Let me know if you have questions about the answer.

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3 years ago