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3 years ago

Egg laying land animals have evolved to produce eggs with tough shells to ensure that

Biology

2 answers:

9966 [12]3 years ago

6 0

The eggs survive and don't break easily.

Papessa [141]3 years ago

4 0

Answer:

To ensure that no drying of the embryo occurred.

Explanation:

Because of the inhospitable environment, eggs from terrestrial animals that had a thinner shell were very susceptible to desiccation of the embryo. This made it difficult for the species to continue because it caused the embryo to die and did not allow a new being to be generated.

Over time, as a way of overcoming this disadvantage, some of the land animals had evolved to make thick-shelled eggs. The egg of these animals has a thick shell that prevented the drying of the embryo. However, the shell was porous, allowing gas exchange between the embryo and the external environment, thus ensuring the survival of the species.

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The original regimen known as Pasteurization consisted of:

algol13

Answer:

The correct option is: 4. Heat at 62.8 degrees C for 30 minutes

Explanation:

Pasteurization is the process or technique of heating packaged as well as the unpackaged liquid food, to remove pathogens and extend the shelf life. In this process, the food is usually heated at temperatures below 100 °C.

Originally, this process involved heating the food at 72.2 °C for 15 seconds and 62.8 °C (145 °F) for 30 minutes, for batch pasteurization.

4 0

2 years ago

Use the drop-down menus to identify the scientists who match the descriptions below. found that animals are composed of cells fo

NISA [10]

found that animals are composed of cells is Theodor Schwann

found that plants are composed of cells is Matthias Schleiden

looked at cork through a compound microscope is Robert Hooke

declared that all living cells can only come from other living cells called living cells "animalcules" is Rudolph Virchow

6 0

3 years ago

Read 2 more answers

In the United States, which direction does a continental polar air mass that forms over Canada usually move and why?

goldfiish [28.3K]

In the United States the direction the continental polar air mass move South toward the Gulf of Mexico to replace the rising maritime tropical air mass.

Answer: Option A

Explanation:

Air masses are large bodies of air moving horizontally in a very uniform way. Continental polar air mass is an air mass that forms near the poles. It originates in northern Canada and Alaska and move south then East.

The continental polar masses are the causes for the severe cold weather in the South during the cold months. Maritime tropical mass are warm and have high moisture content. During winter it comes in contact with the continental polar mass hence getting stabilized.

3 0

2 years ago

Explain the three different types of RNA.

UkoKoshka [18]

There are three types of RNA involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribisomal RNA (rRNA). All three of these nucleic acids work together to produce a protein. The mRNA takes the genetic instructions from the nucleus to the cytoplasm, where the ribosomes are located.

7 0

3 years ago

Read 2 more answers

What would you expect to happen if your blood sugar was 120mg/100mg?

erastova [34]

Answer:

The 120 miligram per 100 milliliter of the sugar suggests that the blood is hyperglycemic.

Explanation:

the hyperglycemia is the condition, in which the blood sugar level increases than the normal blood sugar levels. The main cause of the insulin is decreased function of the insulin hormone. The condition, in which the insulin is not working properly and is unable to metabolise the sugar (glucose) present in the blood is known as Diabetes.

So, the given case can be a result of diabetes.

6 0

2 years ago