Keystone species for the first blank. This is because keystone species are what holds an ecosystem together.
direct impact because the removal of a keystone species is neither beneficial or a domino effect. if the entire ecosystem relies on that one species, then the niches of all the animals in that ecosystem will be directly affected.
Answer: 1800 centimeters is the largest measurement
Explanation:
1800 cm = 0.018 km
2.1 m = 0.0021 km
0.0017 km is the smallest
There is a serious problem related to global warming is that in British Columbia there is a scourge of our pine trees occurring in our dry Interior of what is called a pine beetle. Since it doesn't get below about -30 degrees centigrade for 3 weeks anymore in the winter, these pests do not get killed in the winter so for probably at least 15-20 years now they have gone on the rampage and killed large swaths of our pine forests.
When the sawmills in BC saw this pine beetle-killed lumber it is so dry it creates a lot of fine dust in the mills. Due to poor control of this dust there has been two explosions in which this dust has ignited and 2 or 3 workers have been killed as a result. So in this way global warming can be deadly to human activity if extra precautions are not taken.
Answer:
The main difference between plankton and nekton is that plankton are passive swimmers that are carried by the water currents whereas nekton are actively-swimming organisms that swim against the water currents.
Explanation:
Mitosis which is the reproduction of cells.
