Answer is: D) non-indigenous species.
Non-indigenous species or an introduced species is a species living outside its native area, but which has arrived there by human activity, either deliberate or accidental.
Kudzu (Japanese arrowroot) was introduced from Japan into the United States at the Japanese pavilion in the 1876 Centennial Exposition in Philadelphia.
The United States Forest Service estimated the rate of spreading of plant Kudzu to be 2500 acres per year.
The last one/D (my answer has to be at least 20 characters so idk it is what it is)
Answer:
pH = 6.5
Explanation:
Given data:
pH of substance = ?
[OH⁻] concentration = 3.2×10⁻⁸
Solution:
pOH = -log[OH⁻]
pOH = -log[3.2×10⁻⁸]
pOH = 7.5
we know that,
pH + pOH = 14
pH = 14- pOH
pH = 14 - 7.5
pH = 6.5
Answer:
The mass number of an element is the sum of protons and neutrons.
Hence, 53+66 =119
The mass number of the atom is 119.
