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Molodets [167]
3 years ago
8

Besides through direct contact, how can communicable diseases spread from one person to another? Check all that apply. indirectl

y through animals and food through genes passed from one generation to another from a mother to her newborn through contaminated objects that multiple people touch
Biology
1 answer:
sweet [91]3 years ago
5 0

All of them, when a disease infects an object it can last for a long time if not cleaned

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anzhelika [568]
Option 2. Because in the living things in an ecosystem it HAS to have consumers and decomposers. The other answer choices don’t have them so that’s the answer. Hope this helped and if it did then please give a thank you or even brainliest
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3 years ago
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A cactus with long spines protects itself from animals better than a cactus with short spines. According to natural selection, _
Tanzania [10]

2. or B.

long-spined cacti will survive longer and reproduce more often than short-spined cacti.

7 0
4 years ago
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Are engines essential to keep a blimp in the air
butalik [34]
<span>Yes although I do not know much about blimps, I believe that some type of engine would be essential to keep a blimp in the air. I understand that they use hot air, but I would think that an engine of some type would be needed to run whatever places the hot air in the balloon while traveling in the air.</span>
8 0
3 years ago
You wish to determine the concentration of bacteria in a liquid sample. You measure the concentration by direct microscopic obse
Lelechka [254]

Answer:

The correct answer to the question above is "PLATE COUNT TECHNIQUE"

Explanation:

DIRECT MICROSCOPIC OBSERVATION is the method of estimating the number of microorganism using microscope. Samples to be estimated are placed on microscope slides which allow few cells in a small volume to be counted. Then, the value determined is used to estimate the total number of cells mathematically. It is only difficult to aee small cells which may affect precision.

VIABLE COUNT is the estimation of the living cells in a given sample.

PLATE COUNT TECHNIQUE is used to estimate the number of viable cells that are present in a given sample of actively growing or dividing cells based on bacteria cells found on agar plate. A sample to be counted is diluted in a solution that will not kill the microorganisms, this is done to enable accurate counting as only living bacteria will be counted.

6 0
3 years ago
"Man is born free, and in everywhere he is in chains." Explain.
xxMikexx [17]

Answer:

With the famous phrase, "man is born free, but he is everywhere in chains," Rousseau asserts that modern states repress the physical freedom that is our birthright, and do nothing to secure the civil freedom for the sake of which we enter into civil society.

:)) BRAINLIEST?

6 0
3 years ago
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