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laiz [17]
3 years ago
13

How long did people have to wait for evidence of the existence of atoms?

Biology
2 answers:
Naily [24]3 years ago
6 0

Answer:

Its 2000

Explanation:

My science teacher told me

const2013 [10]3 years ago
4 0

Answer:

15 years

Explanation:

The celebrated characterization of cathode rays by J. J. Thomson in 1897 identified a universal constituent of atoms, the electron.

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What does genetic modification mean?
True [87]

Answer:

dna

Explanation:

bacally DNA

3 0
3 years ago
Read 2 more answers
The molecular bonds between atoms are considered to be _____ in a food item, before you eat it.
Daniel [21]

Answer:

Chemical energy

<h2>Which form of energy does our food contain? </h2>

Yes, food serves as a basic source of the nutrients and energy needed to maintain and grow the body. Food contains what is referred to as "chemical energy" in terms of energy. This is nothing more than the bonds between the atoms that make up the specific food item, which the body may break down to release energy that it can use to create, repair, and ensure appropriate bodily function. This chemical energy is ultimately sunshine energy, which plants have the extraordinary capacity to use and store in the chemical compounds they produce, mostly in their leaves, using sunlight, water, and atmospheric carbon dioxide. Food does indeed contain energy, but that energy ultimately originates from the sun. Since people have known this for thousands of years, many civilizations revere the sun, along with water, air, and of course fire, as the source of life. For the body to function, energy is required by the muscles, brain, heart, and liver. The food we eat provides us with this energy. Our bodies break down the food we consume by combining it in the stomach with fluids (acids and enzymes). The carbohydrate (sugars and starches) in food is broken down into another form of sugar, termed glucose, during digestion in the stomach. The glucose is absorbed by the stomach and small intestines before being released into the circulation. Upon entering the bloodstream, glucose can either be utilized right away for energy or stored for later use. But in order to utilize or store glucose for energy, our systems need insulin. When insulin is absent, glucose remains in the circulation, which raises blood sugar levels. The glucose is burnt inside of your cells to create heat and adenosine triphosphate (ATP), a chemical that stores and releases energy as the cell requires. Either oxygen is present throughout the process of converting glucose into energy, or it is not. In the mitochondria, which are microscopic structures located in the gel-like fluid that fills every cell, glucose is transformed into energy using oxygen. This conversion results in waste products including water and carbon dioxide as well as energy (ATP, heat). Without oxygen, red blood cells convert glucose into energy because they lack mitochondria. ATP, heat, and lactic acid are produced as a result. Muscle cells also use glucose as a source of energy. Muscle cells are, well, double-jointed when it comes to converting glucose into energy. They can metabolize glucose with oxygen because they contain mitochondria. However, if the muscle cell's oxygen level plummets, the cells can simply convert glucose into energy on their own without it. When you have been working out so hard that you are physically out of breath, this is most likely to occur.

#SPJ2

7 0
2 years ago
Read 2 more answers
What do fertilizers contain, that make plants and algae grow faster​
arsen [322]

Answer:

the fertilizers contain nitrogen potassium and phosphorus . this makes the plants and algae grow faster

Explanation:

Fertilizers supply plants with the elements that may be missing or in short supply in a form that can be used by the plants for faster growth. Most fertilizers supply nitrogen, phosphorus and potassium

3 0
3 years ago
A red-tailed hawk swoops down and captures a young rabbit feeding on dandelions growing in a park. the relationship between the
Rudiy27
The hawk, a carnivore (animal meat-eater), is predating on the rabbit, an herbivore (plant-eater). So the hawk can be seen as the predator and the rabbit as the prey.
But another type of relationship important in Ecology is consumers. So producers are the plants that feed a food web. That makes the rabbits the primary consumers (herbivores) of these plants. Then the hawks become the secondary consumers (carnivores) of the primary consumers, by eating the herbivores.
Hope that this makes sense!
4 0
3 years ago
Which of the following is NOT correctly matched with the organ system.
UkoKoshka [18]

Answer:

The correct answer is

A. Anxiety- Nervous system

Explanation:

Anxiety has nothing to do with the Nervous system; the nervous system is the nerves in your body and is not what makes you nervous or anxious. All the other answer choices are correct.

4 0
3 years ago
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