The answer is D
One way to remember this is when you are building a bridge there is one piece right in the middle that keeps the whole thing from collapsing that is called the key-stone. If a keystone species goes extinct then the rest of the ecosystem will crumble around it.
Matthias Jakob Schleiden is the German biologist that said all plants were made of cells
Answer:
a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
"chlorine acts as a catalyst promoting the breakdown of ozone"
a person or thing that precipitates an event.
"the governor's speech acted as a catalyst for debate"
Explanation:
hope its help
<h2>Temperate Grasslands</h2>
Explanation:
- <em>Grasses dominate is a temperate grasslands</em>
- Trees and large shrubs are almost found in <em>grassland zones</em>
- There are numerous types of grasses that live in this biome purple <em>needlegrass, wild oats, foxtail, ryegrass, and buffalo grass </em>
- Grasslands are known by various names in various parts of the World such as <em>'Steppes' in Asia; 'Prairies' in North America; 'Pampas', 'Llanos' and 'Cerrados' in South America</em>
- The Temperate grasslands are feature of grasses like the dominant vegetarian
- <em>The large shrub and tree are absent</em>
