BIOLOGY MIDDLE SCHOOL

Sulfur trioxide is a covalent compound. Which is the chemical formula for sulfur trioxide? A. SO3 B. (SO)3 C. S3O D. S3O3

Answers

Answer 1
Answer:

Answer:

Sulfur trioxide is a covalent compound. Which is the chemical formula for sulfur trioxide? A. SO3 B. (SO)3 C. S3O D. S3O3

Explanation:

Sulfur trioxide = SO3, is a chemical class that, however, is composed of sulfur and oxygen atoms.

The answer is: A. SO3.
Answer 2
Answer: The formula for Sulfur Trioxide is A. SO3

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What might cause a organism to lose a necessity of life?

Answers

Answer:

The five Basic Needs to Survive and Thrive

  • Air. Oxygen in one of the most essential human needs.
  • Alkaline Water. Apart form air, water is the most essential element to life.
  • Food. The body can survive quite a while without food.
  • Shelter.
  • Sleep.

By losing any one of the above you can lose a necessity of life.
Necessity of life such as; food, shelter, and water? Can be a multitude of things such as; climate change, deforestation, global warming, rising sea levels, etc. If this isn't what the question is taking, don't put it (obviously). Hope that was some help.

All about one event would occur during meiosis 1

Answers

In meiosis, the chromosome or chromosomes duplicate (during interphase) and homologous chromosomes exchange genetic information (chromosomal crossover) during the first division, called meiosis I. The daughter cells divide again in meiosis II, splitting up sister chromatids to form haploid gametes.

Match these up1. Human sewage
2. Limiting nutrient
3. Dead organisms and solid waste
4. Human activity
5. 80% of air

a. can cause eutrophication
b. nitrogen gas
c. account(s) for even more production of nitrogen than nature does
d. Amount available can determine how fast growth happens.
e. contain(s) nitrogen compounds that are converted by bacteria to ammonia

Answers

5. to B.  3. to E.  2 to A. 1. to D. 4. i believe is C.

Animal Behavior Role on Successful Reproduction of Plants

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Plant reproduction can be made successful through animal interventions: Here are some examples of how animal behavior help plant reproduction:
1) Many plants rely to animals to deliver their pollen to other plants. These animals are called pollinators and include bees, birds, bats and other insects.
2)Other animals help plants reproduce by eating their fruits and scattering or digesting seeds. This will germinate the seeds and allow them to grow into new plants.

3. Which of these substance has a brown color and isdetected by the spectrophotometer in our reaction?
A) Guaiacol
D) Tetraguaiacol
B) Peroxidase E) Hydrogen peroxide
C) buffer

Answers

Answer:

E) Hydrogen peroxide

Explanation:

Hydrogen peroxide is the substance that has a brown color and is  detected by the spectrophotometer in our reaction.

What advantages of being an invertebrate over a vertebrate?

Answers

Their exoskeleton is stronger that just skin. they are much more flexible than vertebras. If they break a body part it will grow back over time.
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PLEASE HELP I'll MARK THE BRAINLIEST1.) A vessel that carries oxygen-rich blood to the heart muscle is called a(n): *A.) Coronary ArteryB.) VeinC.) VentricleD.) Atrium2.) A group of cells that receives messages about the body's oxygen needs and sends out signals to adjust the heart rate is called the: *A.) AtriumB.) Lymph NodeC.) ValveD.) Pacemaker3.) Blood components that helps the body control bleeding are: *A.) HemoglobinB.) Red Blood CellsC.) White Blood CellsD.) Platelets4.) Plasma is mostly composed of: *A.) Blood CellsB.) WaterC.) ProteinsD.) Hemoglobin5.) Which of the following is NOT a characteristic of a vein? *A.) Valves prevent backward flow of bloodB.) Returns blood to the heartC.) Walls are one cell thickD.) Walls are generally thinner than those of arteries6.) The largest artery in the body is called the: *A.) AortaB.) AtriumC.) PacemakerD.) Coronary Artery7.) The network of vessels that returns fluid to the bloodstream is called the: *A.) Lymphatic SystemB.) VeinsC.) ArteriesD.) Circulatory System8.) Hemoglobin is a protein that binds easily to: *A.) White Blood CellsB.) OxygenC.) FibrinD.) Platelets9.) Which of the following structures pumps blood into arteries leading to the lungs? *A.) Right AtriumB.) Left AtriumC.) Right VentricleD.) Left Ventricle10.) Which of the following structures is NOT part of the cardiovascular system? *A.) HeartB.) Blood VesselsC.) BrainD.) Blood11.) True/False: The force of the heart's contracting atria causes blood pressure. *A.) TrueB.) False12.) True/False: Capillary walls must be very thick to withstand the high force of blood pumped by the heart. *A.) TrueB.) False13.) True/False: White blood cells defend the body against disease. *A.) TrueB.) False14.) True/False: Blood travels in two directions in the body. *A.) TrueB.) False15.) True/False: Blood types are determined by proteins known as marker molecules that are on red blood cells. *A.) TrueB.) False16.) Fill in the Blank: The right and left __________________ are the two lower chambers of the heart. *17.) Fill in the Blank: A sphygmomanometer is an instrument that measures ____________________________. *18.) Fill in the Blank: A flap of tissue that prevents blood from flowing backward is a(n) ______________. *19.) List two of the three main roles of the cardiovascular system: *20.) Tell me anything else that you learned in science about the cardiovascular system: