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3 years ago

What happens in a convection cell?

Biology

1 answer:

BARSIC [14]3 years ago

5 0

Answer:

The correct option is A. Cooler, more dense material sink while warmer, less dense material rises.

Explanation:

Convection can simply be described as the transfer of heat energy among molecules or substances. Convection will occur if molecules of liquid or gas are given rough supply of heat. Hot liquids or gases would have the following properties:

Their density would be less.

They would have the ability to rise.

Whereas the cooler molecules will have the following properties:

Their density would be more than the hot molecules.

They would have the ability to sink.

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. A different runner trains for a marathon for 6 months by eating nothing but bags of french fries from McDonalds. They run a 10

Sladkaya [172]

Answer:

0.1m/s

Explanation:

The speed, which refers to how fast an object moves within a period of time, can be calculated as follows:

Speed (m/s) = distance (m)/time (s)

Based on the provided information in the question, distance = 10m, time = 100s

Hence, the speed will be:

Speed = 10/100

Speed = 0.1m/s

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3 years ago

Which actions should a nurse take while caring for a preschooler whose blood lead level is found to be 25 mcg/dl? select all tha

netineya [11]

- Provide the family with lead education
- Consider treating the child with appropriate chelation therapy
- Refer the child to a clinical center specializing in lead poisoning

If the blood lead level<span> of a preschooler is found to be between 20 and 44 mcg/dL, the nurse should provide lead education to the family. The nurse should also consider treating the child with appropriate chelation therapy. The nurse may refer the child to a clinical center specializing in lead poisoning. The nurse should refer the child to social services if the child’s blood lead level is between 15 and 19 mcg/dL. The nurse should immediately provide diagnostic testing and initiate chelation therapy if the child’s blood lead level is 70 mcg/dL or greater.</span>

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3 years ago

Name two minerals elements that are necessary in the synthesis of chlorophyll

Degger [83]

Answer:

Iron and Magnesium are the elements

4 0

2 years ago

Color coat for roan cows (RW) shows codominance. A cow with a white coat has WW as its genotype. A cow with a red coat has RR as

Zarrin [17]

Answer:

1/4

Explanation:

5 0

3 years ago

Identify Phases of meiosis 1

azamat

Answer:

Prophase, Meataphase, Anaphase and Telophase

Explanation:

Prophase-

The chromosomes begin to condense and the nuclear envelope breaks down.

Metaphase-

Pair of homologous chromosomes move to the eqautor of the cell.

Anaphase-

Homologous chromosomes move to the opposite poles of the cell.

Telophase-

Chromosomes gather at the poles of the cells. Cytoplasm divides.

4 0

2 years ago