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Lesechka [4]
2 years ago
7

I need help please

Biology
2 answers:
elena-14-01-66 [18.8K]2 years ago
7 0

Answer:

B) A volcanic lava flow cools and hardens on the surface.

Explanation:

11Alexandr11 [23.1K]2 years ago
3 0

Answer:

Explanation:

D i think because subducing forms metamorphic rock(subduction is where two convergent plate boundries run into each other bringing down rock into the inside of the earth). Check the comments to see if im right

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A sample of well water is tested for its bacterial content in a plate count assay. A one-milliliter sample of the water is dilut
Sholpan [36]

Answer:

The original water sample contains 830,000 cells per milliliter.

Explanation:

A sample of well water is tested for its bacterial content in a plate count assay. A one-milliliter sample of the water is diluted in a 1:10 dilution series. One milliliter of the fourth dilution tube is plated in a pour plate. After incubation, the plate has 83 colonies, indicating that the original water sample contained 830,000 cells per milliliter.

6 0
3 years ago
Solids will usually sink when placed in their own liquids. Which is an exception?
Marat540 [252]

WATER

Solids will usually sink when placed in their own liquids with the exception of water

Explanation:

Ice (the solid form of water) floats on water that is cooler than 4 degrees centigrade. This is unlike any other material and this phenomenon has been referred to as the ‘water anomaly’.

Most substances will sink in their own liquid because the solid form is denser than the amount of their own liquid that they displace when immersed. This is because the particles in the solid are closely packed together hence there are more particles per volume than in the liquid form.  

Water however, expands at temperatures below 4 degrees and hence ice is less dense than water at 4 degrees and below. The particles in ice are farther apart than particles of water at 4 degrees and below. There is, therefore, more particles per volume in the liquid form of water than in ice – making ice less dense.

Learn More:

For more on 'water anomaly' check out;

brainly.com/question/871737

#LearnWithBrainly

4 0
3 years ago
Which animal in a pond food chain would be on the same trophic level as a snake in a grassland ecosystem?
nirvana33 [79]
I think a raccoon because both are predators
3 0
3 years ago
Match each graph with its correlation coefficient.<br> +1.0<br> +0.85<br> +0.15<br> -0.50<br> -1.0
Elan Coil [88]

Answer:

-0.50

Explanation:

For the graph displayed, the most probable value of the correlation Coefficient is - 0.50 ; the line of best fit has a negative skoe and hence will have a negative relationship as the correlation Coefficient is a statistical value which measures the degree of relationship between two variables. Also, the distribution of data in the plot does not give a perfect fit, hence a correlation Coefficient of - 1.0 isn't possible for the distribution shown.

8 0
2 years ago
Immunizations that the elderly need to receive on a yearly basis include the following:
lord [1]

Answer:

Option (a), (b) and (c)

Explanation:

At the old age, a person's immune system becomes weak and the person becomes more prone to diseases like influenza or common cold or flu.

These infections are more common at the age above 60 years where a severe condition of cold can also lead to Pneumonia.

Also those people which did not have the Tetanus vaccine at the age of 11 or 12 must have the Tetanus Tdap.

The lack of immunity to fight against seasonal changes make it necessary for the elderly people to get influenza vaccine.

Also Pneumonia vaccine provides protection against 23 types of pneumococcal bacteria thus it necessitates the vaccination of Pneumonia.

8 0
3 years ago
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