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3 years ago

Write a reflection based on any other thoughts you have about Earth Day

Biology

2 answers:

aksik [14]3 years ago

7 0

Answer:

Earth Day should definitely be observed every April 22, although every single day should have the spirit of Earth Day regardless of the date on the calendar. Earth Day is an important reminder that we live on a planet that isn't disposable and should be taken care of at all costs. It's definitely beneficial to set aside a day where the focus is on making lifestyle choices that will better the environment. With the increase of pollution and the drastic reduction of natural resources, we need to know how to preserve the resources we have before they're gone. Earth Day is also a time to learn more about the benefits of recycling and eating local foods for the benefit of the environment.

Explanation:

HACTEHA [7]3 years ago

5 0

Answer:

Explanation:

Earth Day is an annual event created to celebrate the planet's environment and raise public awareness about pollution. The day, marked on April 22, is observed worldwide with rallies, conferences, outdoor activities and service projects.

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The term ""insecure laboratory procedures"" in the definition of a bio-hazard presented in this educational module refers to whi

valentina_108 [34]

Answer:

The term insecure laboratory procedures in the definition of the bio-hazard presented in the educational module refers to the "safe pipetting and other work done".

Explanation:

The "insecure laboratory procedure" tells us about the "safe pipetting and miscellaneous work practices" in the bio-hazard risk management as any mistake or wrong application may lead to some wrong chemical reaction which will cause huge damage or any side effect. Hence, safe pipetting or safe handling while working with bio hazards are necessary. Proper disposal, proper disinfectant and proper clean up are necessary. Proper care should be taken to avoid the contact of chemicals during pipetting.

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3 years ago

4. What genotypes of parents will have only white-fur offspring? Parent 1 genotype = Parent 2 genotype = What genotypes of paren

AnnZ [28]

Answer:

All white offspring: Parent 1 genotype = homozygous dominant

Parent 2 genotype = homozygous/heterozygous dominant

For all black offspring: Parent 1 genotype = homozygous recessive

Parent 2 genotype = homozygous recessive

Explanation:

The cross was between a white mouse and a black mouse and the phenotypic ratio of the resulting offspring is 50% white and 50% black.

Assuming that fur color in the mouse is represented by the allele A (a), In order to give 1:1 phenotypic ratio of the offspring, it means the white mouse is heterozygous with Aa genotype and the black mouse is homozygous with aa genotype. Also, it means that the allele A is dominant over the allele a.

Aa x aa

Aa Aa aa aa

Aa = white

aa = black

Ratio of white to black = 50/50 or 1:1

Hence, in order for a cross to yield only white offspring, the parents can either be homozygous AA and AA or one will be homozygous AA and the other will be heterozygous Aa.

1. AA x AA

AA AA AA AA (all white offspring)

2. AA x Aa

AA Aa AA Aa (all white offspring).

In order to produce only black offspring, both parents must be homozygous aa.

aa x aa

aa aa aa aa (all black offspring)

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A student looks at a model of a glucose polymer and sees that it has many branch points. A label says that it comes from muscle

denis-greek [22]

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A student wishes to measure the speed of a toy car at the bottom of an inclined plane. Which information is needed to calculate

Sidana [21]

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3 years ago

I observe that squirrels that live in the southeastern United States are much thinner than squirrels that live in the northeaste

stiv31 [10]

Answer:

No, it is not a scientific theory.

Explanation:

A scientific theory is a proposition that is made to explain the various phenomena that are occurring in nature and it is supported by experiments that have repeatability and well-analyzed results.

Scientific theories are usually tested in experiments under controlled conditions and verified as well.

In the given situation, the theory made by the observer is not being tested through any experimentation or quantification and therefore, it is just a hypothesis and not a scientific theory.

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3 years ago