After hydrogen and oxygen, what element makes up almost all of the most common substances in your body? (2023)

Biology Secondary school


answer 1

I think it's carbon

answer 2

Oxygen makes up about 65% of the human body by weight. Numerically, hydrogen makes up about 65% of the total number of atoms in the human body, but for most people it's probably closer to 63%. Balancing by mass: The mass of the human body consists mainly of oxygen, carbon, hydrogen and nitrogen.

related questions

Mangroves have two types of specialized root systems.


Answer: Mangrove trees are the trees that live in the coastal area. They are very profitable financially.

  • Mangroves tend to survive in water because they have underwater roots. This root serves as an anchor, and the raised roots, located above the water, draw oxygen from the atmosphere.
  • They can also survive in halogen conditions because they have a special internal pumping mechanism that removes excess salts from the cells.

Yes, you mess up because it protects other creatures and helps the trees out of the water.

When a protozoan is heterotrophic, it means that it makes its own food
Requires sunlight
They are harmful to bacteria
Get energy by consuming other organisms.


The correct answer is option D

The word "heterotroph" means organisms that depend on other organisms for their nutrition.

These organisms depend on other organisms for their survival.

They do not get their food through the process of photosynthesis.

Protozoa depend on the other organism for their energy and consume energy from autotrophs.

They get energy by eating other organisms.

Give 3 reasons why recycling is bad


1. Air pollution would still be a problem as fossil fuel trucks that produce exhaust must collect and bring back recyclables. In addition, the recycling process itself creates a lot of pollution in the factory.

2. Contamination is also a major obstacle in the recycling industry. Sometimes mistakes happen when sorting recyclables and say, for example, that an aerosol can is mixed with other types of recyclables. can contaminate new products.

3. Most plastics cannot be recycled. There are about seven types of plastic that we encounter in everyday life, but only two of these plastics are recyclable. What cannot be recycled is collected, processed, separated and then disposed of in a landfill.

Hope that helps.

What is hazardous waste?


Hazardous waste is waste that poses a significant or potential risk to public health or the environment.[1] In the United States, the treatment, storage, and disposal of hazardous waste is regulated by the Resource Conservation and Recovery Act (RCRA). Hazardous wastes are defined by RCRA at 40 CFR 261 and are divided into two main categories: characteristic wastes and listed wastes.[2]

Designated hazardous waste is material known or proven to have one or more of the following four hazardous properties: flammability, reactivity, corrosion, toxicity

It is a residue with properties that make it potentially dangerous or harmful to any living organism.


Continents and other pieces of land are on a plate. They are the ones that cause earthquakes.

How fast do the earth's tectonic plates move, on average? A.0.2-0.5cm/year
About 50-100 cm/something
D. 10-20 m/year



Option B, 2-10 cm/year


Typically, tectonic plates move at a rate of cm/year to cm/year.

However, most tectonic plates move at an average speed of cm/year.

The tectonic plates in the Pacific Ocean, known as the "Cocos and Nazca Plates", are the fastest moving tectonic plates. Their displacement rate is cm/year

Therefore option B is correct.

B. 2-10 cm/was)))))))))))))

Select all that apply. How do plant cells differ from animal cells?

Plant cells have mitochondria, but animal cells do not.
Plant cells have chloroplasts, but animal cells do not.
Plant cells have cell walls, but animal cells do not.
Plant cells have cell membranes, but animal cells do not.


Lysosomes are the "scrap" of animal cells, while in plant cells the same function takes place in vacuoles. Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole not found in animal cells.


All living things are made up of cells. We have two types of cells known as eukaryotic and prokaryotic cells. Eukaryotic cells are complex cells, but prokaryotic cells are small and simple. An example of a eukaryotic cell is plants and animals. An example of a prokaryotic cell is a bacterial cell. But let's get back to the questions. Based on the question, the plant cell usually has all the parts that the animal cell has, plus a few extra things that the animal cell doesn't:

1) Rigid cell wall - made of cellulose. It supports and strengthens the cell.

2) Large vacuole - contains cell sap, a weak solution of sugars and salts. Maintains internal pressure to support the cell.

3) Chloroplasts - This is where photosynthesis takes place, which produces food for the plant. They contain a green substance called chlorophyll.

Which organelle changes cell products, packages them for distribution, and can then reach the cell surface as vesicles and vesicles?


This happens through the Golgi apparatus

Which organelle changes cell products, packages them for distribution, and can then reach the cell surface as vesicles and vesicles?
Γ) Golgi apparatus

____ Dating uses the properties of atoms in rocks and other objects to determine their age. O. comparative
C. Approx
B. Absolutely
D. Relative


Answer: b. Absolutely

Absolute dating is a process of determining the age of an object, such as a rock or a living organism, based on the radioactive decay of the atom or radioactive isotope. A radioactivity counter is used to determine the amount of high-energy particles released when radioactive atoms decay in a geological material. It tries to discover the chronological age of past events based on preserved fossils.

I believe the answer is absolute.

How do vesicles help maintain homeostasis in a cell? A. helps cell movement B. helps colony cells work together C. stores substances and releases them as needed. D. forms ribosomes



The correct answer would be option C.


A steady state must be maintained in the cell for normal operation. The concentration of nutrients, salts and other substances must be kept within a specified range. Maintaining a steady state within a cell is called homeostasis.

Like proteins, macromolecules are large molecules that can cross the plasma membrane. Such molecules are transported using a specific mode called vesicular transport. It is an active metaphor because it requires energy.

There are two types of vesicle transport: endocytosis (transport into the cell) and exocytosis (outside the cell). Both types are suitable for on-demand release and storage of substances.

So the correct answer would be option C.

C. Store and release materials as required

Which of the following is the correct term for extreme non-plant life in soil? animal


I think the correct answer from the options listed above is the first option. The correct term for the extreme non-plant life in the soil. I hope this answers the question. Have a nice day. You can ask further questions. Thanks.




Which of the following is a system function in amoeba? -Excretion
- Bones and fat


The correct answer is elimination.

Please rate as the smartest answer! ;)

the process by which one of the neutrons in an isotope decays into a proton and an electron, and the electron leaves the atom as a beta particle


The correct answer is:

beta decay.


The proton remains in the nucleus and the electron breaks apart the atom with high energy, we call it a beta particle. When beta scrap is ejected from the nucleus, the nucleus has one extra proton and one less neutron. This means that the atomic mass number remains constant and the atomic number increases by 1.

Your answer is... beta decay. I hope it helps

A bond formed by the electrical attraction between two oppositely charged ions is a(n)_____. A) covalent bond
B) Ionic bond
C) hydrogen bonding
D) metallic bonding


The bond created by electric attraction between two opposite charges is?


I think it's an ionic bond

The process of crossing individuals


Species To prove my answer, every person alive today, both the tallest and the shortest, is descended from a... "A species is a group of actual or potentially interbreeding individuals."

The solar system evolved during?


Answer: Adeos Aion

The solar system formed from clouds of dust and gas. The Solar Nebula - where the sun was born about 4.5 billion years ago. It is assumed that all the asteroid planets formed at that time. The spinning matter collapsed under its own gravity, raising the temperature and pressure and setting in motion the nuclear fusion reaction that formed the star - the Sun. The remaining material formed the planets and asteroids. The geological era in which all these solar system formation events took place is known as the Age of Hades.

Gravitational collapse of a giant molecular cloud light-years across. Various stars formed within the collapsing cloud, including the Sun.

Which of the following factors would have the least effect on the carrying capacity of an ecosystem?


Foreclosure of competition

HELP ME! Gold medal if you help and that's it!!! 14) the Clean Water Act
A) Emission control devices required in cars and power plants
B) Setting national air quality standards
C) Set maximum levels for contaminants in drinking water
D) Industries necessary to reduce or eliminate point pollution of surface waters

(1 point)
17) Element____is used in nuclear fission to produce energy

18)(1 point)
Forest habitat and soil are preserved by _____ cutting only a few trees in a forest area.


For Isuran number 17, a fossil fuel number 18

C) Set maximum levels for contaminants in drinking water

What is the correct pair of complementary nitrogenous bases in DNA? A. Adenine and Thymine
B. cytosine and thymine
C. Guanine and Thymine


It would be the first choice. adenine and thymine.

What human activity affects the water cycle?


Man adds substances to water

Livestock vehicles that smoke bad gas, deforestation


Top Articles
Latest Posts
Article information

Author: Greg Kuvalis

Last Updated: 06/04/2023

Views: 5807

Rating: 4.4 / 5 (55 voted)

Reviews: 94% of readers found this page helpful

Author information

Name: Greg Kuvalis

Birthday: 1996-12-20

Address: 53157 Trantow Inlet, Townemouth, FL 92564-0267

Phone: +68218650356656

Job: IT Representative

Hobby: Knitting, Amateur radio, Skiing, Running, Mountain biking, Slacklining, Electronics

Introduction: My name is Greg Kuvalis, I am a witty, spotless, beautiful, charming, delightful, thankful, beautiful person who loves writing and wants to share my knowledge and understanding with you.