Answer:
Spores
Explanation:
Spores are small structures produced in large quantities by bacteria (as well as fungi and plants), capable of generating a new individual.
Bacterial spores (or endospores) act as survival structures when bacteria are found in unfavorable environmental conditions.
They are produced by the bacteria themselves and are found freely inside of them. The position where the spores are found is used as a way of identifying the species of bacteria.
While in the form of spores (which can be viable even for centuries for some species), the bacteria are resistant to heat, dehydration, radiation and pH variations.
When the environmental conditions are <u>favorable</u>, the spore absorbs water until it swells and breaks. From there, germination occurs, producing a cell identical to the parental cell, reactivating the metabolism, as well as the multiplication and growth of new bacteria.
1. the turning of all or part of an organism in a particular direction in response to an external stimulus.
2. Phototropism is a response to the stimulus of light, whereas geotropism (also called gravitropism) is a response to the stimulus of gravity . ... when the stem grows against the force of gravity, this is known as a negative geotropism.
3. Terrestrial plants direct their root systems downwards into the soil, mainly in response to the gravity vector; however, as the roots search for water and nutrients, they frequently change direction to avoid obstacles (thigmotropism). Root hydrotropism is a mechanism found in many species to avoid water stress.
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1) the substance will solidify. Just like when you place water below 0 degrees it forms ICE
2) the substance will evaporate, since the kinetic energy the particles will have would increse. This gives them enough energy to form gas particles (break away from the liquid)
The reason large bodies of water do not quickly fluctuate in temperature is because water has a high heat capacity.
