Answer: B
Explanation: Traits usually die off when they are unneeded by the organism, or if the trait causes harm to the organism's survival. Through natural selection, over time, the organisms with the best combination of traits for its survival will become the dominating species, and those with weaker traits may not survive long enough to pass off their traits to future offspring.
Nitrogen, I found my answer here
http://slideplayer.com/slide/8953264/
Hello there
So Ecosystem is a natural process with natural resources and abiotic factors such as sunlight, soil, water and all nonliving things
Components of the ecosystem are the abotic factors that biotic factors which are living things.
Thank you
I look forward to your success Sara
Three reasons for cells to undergo mitosis are
-Growth
-Repair damaged cells
-Replace dead cells
Answer:
hydroxyl ions have 7 electrons :D
Explanation:
because they are around the electronegative oxygen atom