Answer:
The answer is C. Fertilizers
Explanation:
Plants, like animals, require certain nutrients for optimal growth and development. The soil is the primary source of nutrients for plants. <u>Some </u><u>nutrients</u><u> like the following are </u><u>crucial for the plant development and growth.</u>
- Nitrogen (a key element in plant proteins and hormones)
- Phosphorous (required for early root and plant growth), magnesium (required for production of chlorophyll)
- Sulfur ( an element in proteins)
- Potassium (improves fruit quality, enhances growth and disease resistance)
- Apart from these, metals like copper, iron, manganese, zinc and molybdenum are required for growth in trace amounts.
Fertilizers:
- <u>Fertilizers are artificial or natural forms of these nutrients</u> that are added to the soil or the plant to enhance growth and development.
- A fertilizer can either be one nutrient or a combination of the aforementioned nutrients. For example, urea is a purely nitrogen based fertilizer whereas potassium phosphate fertilizer is a combination of two nutrients.
- Fertilizers are supplied to the plants in a readily available form.
- Fertilizers help in increasing the crop yield.
<span>The correct answer is C).high salt and low pH. Sweat glands pump out saline solution as a means of cooling the body as well as removing waste (sweat). Human skin typically has a pH of 5.5-5.9 with major issues at higher or lower pH (e.g., eczema)</span>
Answer:
vacuole
Explanation:
the vacuole is bigger in the plant cells but small in animal cells,and gives shape to the plant cells by holding them firm and in shape
