Answer: Abiotic variables found in terrestrial ecosystems can include things like rain, wind, temperature, altitude, soil, pollution, nutrients, pH, types of soil, and sunlight. ... Limiting factors keep populations within an ecosystem at a certain level. They may also limit the types of organisms that inhabit that ecosystem.
Explanation:
Answer:
According to the U.S. Energy Information Administration (EIA), in 2015 Wyoming, West Virginia, Kentucky, Illinois, and Pennsylvania produced about 639 million short tons (580 million metric tons) representing 71% of total U.S. coal production in the United States.
Explanation:
D. Testable, because a hypothesis is only a persons guess
Light-independent reactions, or dark reactions,[1] of photosynthesis are chemical reactions that convert carbon dioxide and other compounds into glucose. These reactions occur in the stroma, the fluid-filled area of a chloroplast outside the thylakoid membranes. These reactions take the products (ATP and NADPH) of light-dependent reactions and perform further
Answer:
Because of the natural selection
Explanation:
Variation in nature is all we can found out there. Through millions of years nature went with the survival of the fittests, like Darwin said.
When we talk about artificial selection, we talk about humans getting involve on that selection, but we deppend on variation in nature. We can't "create" a new species, but we do can choose the genetic traits we want to prosper and which no.