1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Olin [163]
3 years ago
15

What are the substances?

Biology
2 answers:
Reil [10]3 years ago
8 0
<h2>Answer:A chemical substance is a form of matter having constant chemical composition and characteristic properties. Some references add that chemical substance cannot be separated into its constituent elements by physical separation methods, i.e., without breaking chemical bonds. </h2>

Explanation:

Tanya [424]3 years ago
6 0
A substance is matter which has a specific composition and specific properties. Every pure element is a substance. Every pure compound is a substance. Examples of substances: Iron is an element and hence is also a substance
You might be interested in
Deforestation is a source of anthropogenic, or human caused carbon dioxide emissions because cannot consume carbon dioxide molec
Roman55 [17]

Answer:

<h2>Carbon is the chemical backbone of life on Earth. Carbon compounds regulate the Earth’s temperature, make up the food that sustains us, and provide energy that fuels our global economy. </h2><h2 /><h2>The carbon cycle. </h2><h2>Most of Earth’s carbon is stored in rocks and sediments. The rest is located in the ocean, atmosphere, and in living organisms. These are the reservoirs through which carbon cycles. </h2><h2 /><h2>NOAA technicians service a buoy in the Pacific Ocean designed to provide real-time data for ocean, weather and climate prediction. </h2><h2>NOAA buoys measure carbon dioxide </h2><h2>NOAA observing buoys validate findings from NASA’s new satellite for measuring carbon dioxide </h2><h2>Listen to the podcast </h2><h2>Carbon storage and exchange </h2><h2>Carbon moves from one storage reservoir to another through a variety of mechanisms. For example, in the food chain, plants move carbon from the atmosphere into the biosphere through photosynthesis. They use energy from the sun to chemically combine carbon dioxide with hydrogen and oxygen from water to create sugar molecules. Animals that eat plants digest the sugar molecules to get energy for their bodies. Respiration, excretion, and decomposition release the carbon back into the atmosphere or soil, continuing the cycle. </h2><h2 /><h2>The ocean plays a critical role in carbon storage, as it holds about 50 times more carbon than the atmosphere. Two-way carbon exchange can occur quickly between the ocean’s surface waters and the atmosphere, but carbon may be stored for centuries at the deepest ocean depths. </h2><h2 /><h2>Rocks like limestone and fossil fuels like coal and oil are storage reservoirs that contain carbon from plants and animals that lived millions of years ago. When these organisms died, slow geologic processes trapped their carbon and transformed it into these natural resources. Processes such as erosion release this carbon back into the atmosphere very slowly, while volcanic activity can release it very quickly. Burning fossil fuels in cars or power plants is another way this carbon can be released into the atmospheric reservoir quickly.</h2>

Explanation:

8 0
3 years ago
While performing an experiment at home, Emma adds lemon juice to a soap solution. How will this affect the pH of the soap soluti
kirza4 [7]
The pH will decrease because lemon juice is very acidic meaning it would bring the pH level down to a more acidic value.
4 0
3 years ago
Which of the following statements is true of meiosis? (2 points)
Helga [31]
The answer that is true of meiosis is that D) it divides one diploid cell into four haploid cells. 
6 0
4 years ago
How do radiation and chemotherapy affect cancer cells?
elixir [45]

Answer:

They destroy the DNA or RNA

Explanation:

Cancer drugs work by damaging the RNA or DNA. The faster the cancer cells divide, the more likely it is that chemotherapy will kill the cells, causing the tumor to shrink. They also induce apoptosis. Radiation therapy is a cancer treatment that uses high doses of radiation to kill cancer cells and shrink tumors. The radiations also induce apoptosis. Cancer cells whose DNA is damaged beyond repair stops dividing and die. The damaged cells die, they are broken down and removed by the body.

7 0
3 years ago
ATP is used for what?
ZanzabumX [31]
ATP is an energy carrier that holds energy after processes like cellular respiration. The body can turn ATP into energy to do processes like physical movement later on. 

Hope this helps :)
6 0
3 years ago
Other questions:
  • The preserved remains of trilobites suggest that these organisms lived in the seas for about 380 million years. They also indica
    15·2 answers
  • When animals excrete nitrogenous wastes into the soil certain soil bacteria convert these wastes into nitrates, which are absorb
    6·2 answers
  • Describe at least one function for each type of biological macromolecule?
    13·2 answers
  • What is the equation of photosynthesis?
    5·1 answer
  • Name two types of evidence some scientists used to support
    9·2 answers
  • All fungi are
    9·1 answer
  • The "master control genes" that regulate other genes, which determine what body parts will develop in which locations, are calle
    9·1 answer
  • (GIVING BRAINLIEST!!)
    14·2 answers
  • In genetics, the PHYSICAL characteristic (tall, short, round, wrinkled) of an
    7·1 answer
  • The Michaelis-Menten and the Lineweaver-Burk plots can be used to determine the Km and Vmax of the enzyme-catalysed reaction. Ex
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!