The correct answer is a - silicon dioxide.
Diatoms are single celled algae. They have a silica - based cell wall called a frustule, which gives each diatom a particular shape.
Diatoms exist as separate single cells although some may be found in groups or colonies. The ones found in colonies create very pretty forms: leaf shaped, oval , star and even like a period.
Outer shells of diatoms are quite valuable. They are used in industry in the manufacture of toothpaste to give it grit.
Deforestation leads to fewer plants being available to conduct photosynthesis. Less oxygen is available for cellular respiration is a possible effect on the remaining plant populations.
<u>Explanation:</u>
- Deforestation and Photosynthesis are related to each other. Because if Deforestation occurs more photosynthesis will reduce.
- Cutting and burning down of the trees causes deforestation as it affects photosynthesis. Plants prepare food using photosynthesis.
- The plant takes carbon-di-oxide for the preparation of food and releases oxygen. Oxygen is required for every living thing in the world.
- As now World goes on deforestation and it should be seriously stopped.
Answer:The main way animal-like protists differ from plant-like protists is in the way they get energy. Animal-like protists are heterotrophs. ... Plant-like protists, on the other hand, are autotrophs. They can make their own energy from the sun or other sources just as plants can.
Explanation:
The process of mountain building is called Orogeny.
the correct answer is Evaporation
hope this helps :)
