Plant cells have cell walls and animal cells do not because the plant cell needs it for its activities.
Answer:
(A) A RISE IN GLOBAL TEMPERATURES
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Answer:
shortest wavelength of visible light: Violet
Energy that can be felt as heat but can't be seen: Infrared radiation
Short invisible rays that can cause damage to the eyes: Ultraviolet light
visible light with the longest wavelength: red 700
Explanation:
Violet has the shortest wavelength, at around 380 nanometers, and red has the longest wavelength, at around 700 nanometers.
Answer:
A) a physiological desire to consume food is the correct answer.
Explanation:
- Hunger is a feeling that the person needs food to eat.
- Hunger makes the body weak and vulnerable to infections because the body does not get adequate food to fight against the infections and due to hunger people suffer from malnutrition and if children remain hungry they often have abnormal in their growth.
- hunger is caused because of poverty, job instability, food shortages, poor infrastructure, nutritional quality.
- Symptoms of hunger are:
- Feeling of growling and emptiness in the stomach.
- Dizziness
- Gurgling in stomach
- not able to concentration
- headache
- irritability
- nausea
These greenhouse gases are trapping the heat inside the atmosphere. When more of these gases are released, it contributes to global warming and the melting of many polar areas that could potentially cause a natural disaster in the future.
