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My name is Ann [436]
3 years ago
10

Which of the following helps plant cells remain rigid? A. cell membrane B. nucleolus C. capsule D. central vacuole

Biology
1 answer:
Tamiku [17]3 years ago
6 0
The answer is D central vacuole
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Which organisms have the least amount of stored energy in an ecological pyramid
Alenkinab [10]
<h2>Answer</h2>

Tertiary Consumers get least amount of the energy.

<h2>Explanation</h2>

In an ecological pyramid less energy is available to organisms in the upper level because each organism releases some of the chemical energy as food and to the air as thermal energy .Therefore primary consumers get almost 10% of autotrophs prduced energy. The second consumers in the pyramid get 1% from primary consumer. In the case of tertiary consumers, they get only 0.1%. Hence the top consumer of a food pyramid receives the least energy.


5 0
3 years ago
30 points
Viktor [21]
The first one. Although I would have phrased it as plants absorbing sunlight and then converting it intro glucose, the type of food that plants can store and then break it down to use as food. but your explanation works fine.
5 0
3 years ago
Read 2 more answers
Use the empirical rule to solve the problem. the systolic blood pressure of 18-year-old women is normally distributed with a mea
slava [35]
First you need to determine how much standard deviation the range is. 
120+12*x= 96
x= 96-120/ 12= -2

120+12*y=144
y= 144-120/12= +2

Systolic blood pressure between 96 mmHg and 144 mmHg means that the blood pressure is at -2SD to +2SD. The Z-score for -2SD is 0.0228 and +2SD is 0.9772
So the percentage would be: 0.9772- 0.0228  * 100%= 95.44%
6 0
3 years ago
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Convection about the city
julsineya [31]

Convection- is the heat transfer due to the bulk movement of molecules within fluids such as gases and liquids, including molten rock. Convection includes sub-mechanisms of advection, and diffusion.

Explanation:

Cities become warmer than their rural surroundings due to buildings, roads and other infrastructure replacing open land and vegetation. “Surfaces that were once permeable and moist,” writes the“become impermeable and dry.”

During the daylight hours, temperatures inside large cities range between 1.8 and 5.4 degrees F warmer than their surrounding areas. At night, city temperatures can be as much as 22 degrees F warmer.

This phenomenon was believed to be the result of concrete and other structures absorbing heat throughout the day and then gradually releasing it at night. But a new study published last week in the journal Nature offers a different explanation: Convection.

How air moves through a city during the day has a greater role in trapping heat, the study claims, than the disappearance of vegetation and the existence of urban structures.

4 0
3 years ago
Can someone please help me
Serhud [2]
Low vegetation erodes more because there is less roots holding it in place
5 0
3 years ago
Read 2 more answers
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