What is the current world population?

Biology

1 answer:

Vikentia [17]3 years ago

6 0

About 7.5 billion people

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Which advancement in technology has helped cut down on waste?

lana66690 [7]

Ans.

Paper waste prevention is defined as a practice to reduce or eliminate use of paper, which is potential for the efficient use or disposal of paper. It decreases the environmental impacts due to both paper manufacturing and paper recycling, such as demands on forest resources).

Use of advance technologies, such as E-mail (electronic mail) can help in cut down on paper waste. Nowadays, E-mail has replaced conventional letters and faxes as it is more eco-friendly than letters and faxes, which needs paper consumption.

Thus, the correct answer is 'option d). E-mail.'

6 0

3 years ago

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You have a plant with yellow seeds, which express a dominant phenotype. How would you determine the plant's genotype? Conduct a

Archy [21]

The answer is Conduct a test cross with a purebred recessive plant.

Test cross is the cross between an organism with unknown dominant genotype and an organism with known recessive genotype.

Since dominant trait results from a dominant allele, the test cross can determine if an unknown genotype is heterozygous and homozygous dominant.

If A is dominant allele, and a is recessive allele, then AA is dominant homozygote, Aa is a heterozygote, and aa is recessive homozygote.

According to the Punnett square, if all of the offspring are heterozygote (Aa), then unknown genotype is dominant homozygous (AA). If half of the offspring are the heterozygote, and the other half are recessive homozygote, then the unknown genotype is heterozygote (Aa).