The abiotic factors of a stream ecosystem involves salt, water, rocks, sediments and trash. This includes the temperature of the water, how much oxygen it contains, how acidic or basic it is, how fast or slowly, and how much sunlight penetrates the surface. A stream ecosystem is the ecosystem of a river viewed as a system operating in its natural environment, including biotic factors and abiotic factors.
Answer: C. Shadow length decreased from sunrise to noon.
Explanation: Think about how the sun is positioned in the sky. If it was noon, the sun is above the stick which means little to no shadow at all. If the sun was rising, its hitting one side of the stick, making the shadow longer.
It would be 75% because that is 3/4, the chances of dominant offspring.
Build several models of his tree house out of different materials, and see which model holds up best to wind, water, and ice.
Answer:
the second one
Explanation: IN the text it literally states it explicitly.
