He is missing a (real) control. Growing two plants without plant food at all doesn't count; in order to see if the new food is better, he must also grow plants with the original food in order to compare it.
He does have an independent variable. This is the type of plant food. It's independent because he has direct control over it.
He needs to give plants the same conditions besides food: same water (amount), same light exposure, same temperature, etc.
He needs to choose a quantitative way to measure how much the plants grew, like mass or length.
A mixture can be classified as a solution, suspension or colloid based on the SIZE OF ITS LARGEST PARTICLES.
A solution is made up of small particles that can not be seen with the naked eyes. The particles of of a suspension are larger and can be seen with the naked eyes. The particle size of the colloid is not as small as that of a solution and not as big as that of a suspension.
Interaction occurs when light goes into an object as heat energy is Absorbed light.
Absorbed light makes an object dark. Absorption of light is when the light is absorbed by the object and converts it into heat energy. The objects converts the wavelength of light into the larger wavelength of heat. this makes the object warmer and produced energy. Absorption depends on the frequency of light that is transmitted. The wavelength of light defined as the distance between the the two successive troughs of the the light wave.
Therefore, Interaction occurs when light goes into an object as heat energy is Absorbed light.
To learn more about Absorbed light here
brainly.com/question/26739493
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Answer:
50 gram calcium do you need
Explanation:
please make me brainlist answer
Because the water seeped through the bag (? I don’t know the context correct me if I’m wrong)
