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alukav5142 [94]
3 years ago
12

Which measurement do geologists use to find the absolute age of once-living things?

Biology
2 answers:
Licemer1 [7]3 years ago
6 0

carbon 14 and nitrogen 14 in the remains


Tema [17]3 years ago
3 0

Answer:

By calculating the amount of decayed daughter elements.

Explanation:

The age of the rock in years is considered as its absolute age. The absolute age is found by determining the concentration of some radioactive elements in the rock. At the time of the formation of rock, small concentrations of radioactive elements get comprised usually. With the passing of time, the parent radioactive elements go through decay process at a regular rate into non-radioactive daughter elements. By calculating the rate at which decaying of a parent element takes place and then by finding the proportion of parent element to the daughter element in the rock, the age of rocks in years can be calculated.

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How do some conditions of urban areas affect the species that live in the area? Give one example.
galina1969 [7]

Answer:

Severage water is most desasterous thing of urbun areas.

noise pollution also damage species

Explanation:

severage water contaminates rivers,canals and other water reserviours that can be harmfull for fish comunity moreover animal may drink water from that water bodies that causes problems in them.

contaminated water from industries also effects water bodies.

noise pollution disturb mental life of man as well as animals .

6 0
3 years ago
What is a plant called when they can make their own food by using photosynthesis
ludmilkaskok [199]
Okay so i hope this help but i think its this:

1. chlorophyll, a green pigment found in the leaves of plants (see the layer of chlorophyll in the cross-section chlorophyll, a green pigment found in the leaves of plants (see the layer of chlorophyll in the cross-section

2. light (either natural sunlight or artificial light, like from a light bulb)

3. carbon dioxide (CO2)(a gas found in the air; one of the gases people and animals breathe out when they exhale)

4. water (which the plant collects through its roots)

5. nutrients and minerals (which the plant collects from the soil through its roots)

Did researching for you so I hope this helped? :)
7 0
4 years ago
Read 2 more answers
Name the levels of organization from smallest to largest 1(Smallest) 2 3 4. 5(Largest)
Vlad [161]

Answer:

cell, tissues, organ,organ system and organism

I think the answer is D, since the heart is not under homeostasis

6 0
3 years ago
Read 2 more answers
There are six classes of nutrients that must be considered when planning your diet: water, proteins, carbohydrates, fats, vitami
KiRa [710]

Answer:

<u> Essential</u> nutrients cannot be synthesized by the human body but are required for optimal functioning. Therefore. They must be obtained from food. Omega-3 fatty acids are prime examples.

You consume macronutrients (water. proteins, carbohydrates, and fats) in large quantities as opposed to <u>micronutrients</u> which you consume in small quantities

<u>Dehydration</u> can develop very quickly when exercising in hot/humid weather conditions.

<u>Proteins</u> are also called 'bodybuilders" due to their function within the body. <u>Amino acids</u> are the building blocks of proteins.

Explanation:

Essential nutrients are those nutrients that are required for the proper functioning of the body but cannot be synthesized by the body.  They are obtained from external sources such as vegetables or synthesized artificially in the laboratories. Micronutrients as the name implies are taken in small amounts. Examples are the different types of vitamins.  

Dehydration occurs when a person loses a good amount of water through sweating or urination. It can easily occur while exercising in hot weather conditions. Proteins repair the cells in our body and are, therefore, rightfully referred to as bodybuilders. Amino acids form proteins.  

6 0
3 years ago
What specific spinal nerve branch controls the movement of rectus abdominis
CaHeK987 [17]

Answer:

The correct answer will be-ventral ramus

Explanation:

Rectus abdominis is a skeletal muscle found in the front part of the body which begins from the sternum and ends at the pubic zone.

Rectus abdominis is also known as "Abs" which viewed externally appears to be six, eight or ten in number.

These muscles are innervated by the thoracoabdominal nerves which carry and transmit signals to CNS and to the muscles back. The main spinal nerve which controls the movement of Abs is known as the "ventral ramus".

Thus, ventral ramus is the correct answer.

7 0
3 years ago
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