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3 years ago

HAPPY NEW YEARS !!! CAN SOMEONE PLEASEEEE HELP ME WITH THIS SCIENCE QUESTION I WILL MARK YOU BRAINLIEST !!!

Biology

1 answer:

sp2606 [1]3 years ago

6 0

Answer:

According to the image shown, the country that most closely resembles the population pyramid by age is the United States (option A).

Explanation:

The population pyramid consists of a bar chart that groups the population by age and sex. Each sex is separated into two columns, while from the base to the top the ages are grouped from lowest to highest.

The pyramid by age shown in the image corresponds to a developed country, such as the United States, since the distribution of the population of infants and young people is proportional, being more acute in the advanced ages, acquiring the shape of a bottle.

The "bottle" shape of the population pyramid indicates a controlled birth rate, as well as good availability of basic and sanitary resources, characteristic of a developed country like the United States.

The other options are not correct because:

C and D. In developing countries such as Nigeria and Ethiopia, the birth rate is high - forming a broad base - and the resources available are limited, so there is a progressive decrease as the age groups are distributed, giving a true pyramid shape.

B. Italy, a European country, has a tendency to rhomboidal population pyramids. This is due to a predominance of adult, young and mature, population, low birth rate, good basic and sanitary resources.

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Small aquatic organisms, such as coral, are the producers of the ocean. Please select the best answer from the choices provided

IgorLugansk [536]

The marine invertebrates of phylum Cnidaria are called corals. Corals are important as they build reefs in oceans and feed on planktons.

The given statement is :

True

The position of corals can be explained as:

The corals are both a primary producer as well as the consumer.

They take energy from algae through the mutual relation between both organisms. The corals feed on planktons, zooplanktons and phytoplankton for energy so they are consumers.

The algae living in coral make food for them and corals produce oxygen.

Therefore, corals are producers.

To learn more about corals follow the link:

brainly.com/question/8999592

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2 years ago

Saturated fats have a____________ high potential for spoiling when exposed to oxygen or heated and unsaturated fats have a______

sattari [20]

Answer: SATURATED fats have a LOW potential for spoiling when exposed to oxygen or heated and UNSATURATED fats have a HIGH potential for spoiling when exposed to oxygen or heated due to their chemical structure.

Explanation:

Fatty acids are long chain alkanoic acids which contains about 10 to 18 carbon atoms. The terminal -COOH group is polar, hence the acid is able to dissolve in water. The carboxylic acid group ionizes in water to a certain degree to form hydrogen ion and the carboxylate ion. Fatty acids are this weak acids. While the long alkyl group is non-polar, and so is not soluble in water. Fatty acids are divided into two:

--> SATURATED fatty acids: In this type of fatty acid, there are absence of double bonds in their hydrocarbon chain. As a result, they are solid at room temperature. Example of saturated fatty acids are found in animal products which includes: milk, cheese and beef. Saturated fatty acids has a LOW potential for spoiling when exposed to oxygen or heating because of their chemical structure. They are usually formed by hydrogenation of unsaturated fatty acids causing them to attain stability in their chemical structure.

--> UNSATURATED fatty acids: In this type of fatty acid, there are presence of one or more double bonds in their hydrogen chain. As a result, they are usually liquid at room temperature. Examples include: vegetable oil, fish oil and groundnut oil.

UNSATURATED fats have a HIGH potential for spoiling when exposed to oxygen or heated due to their chemical structure. The presence of unstable double bonds in their hydrocarbon chain allows oxygen to react with it easily. To makes it spoil easily when exposed to oxygen.

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3 years ago

Mitochondria are unique organelles in several ways. They contain a specific genome that allows them to code for their own protei

faltersainse [42]

Answer:

Explanation:

more mitochondria within a cell. Which other characteristic makes mitochondria unique organelles

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3 years ago

eight children share a bag of candy Conataning 39 pieces. about how many pieces of candy will each child get

iris [78.8K]

about 4. 39/8=4.85, so there will be a couple pieces left over

7 0

3 years ago

Read 2 more answers

A scientist claims that he has protected animal test subjects from a newly mutated virus using an experimental vaccine. The expe

Oliga [24]

Answer:

A. They were part of the control group

Explanation:

In a scientific experiment, the CONTROL GROUP as opposed to the experimental group is the group that does not receive the experimental treatment. This acts as a standard for comparison.

In this question, the EXPERIMENTAL VACCINE is the experimental treatment or independent variable that was added. The five animal test subjects that was injected with this vaccine are called the EXPERIMENTAL GROUP while the other five test subjects that were rather injected with a PLACEBO are called CONTROL GROUPS.

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3 years ago