Match the following substances with the best classification:a. Magnesiumb. Salt waterc. Bloodd. Carbon dioxidee. Soil sample1. Compound2. Element3. Solution4. Heterogeneous mixture5. Suspension1. Describe a method to separate the substances in a solution.2. Distinguish between a saturated and an unsaturated solution.

Magnesium is an Element

Salt water is a Solution

Blood - Suspension because it contains indissoluble components in a solvent

Carbon dioxide - Compound because it has two elements which cannot be separated by physical means

Soil sample is aHeterogeneous mixture

2. You can separate substances in a solution by

Evaporation here the solvent with a smaller boiling point evaporates leaving the solute

3. A Saturated solution is the solution where no more solute can be dissolved while an Unsaturated solution has the ability to dissolve the solute in the solvent.

i believe the answer is a

d₁ = displacement of tern from arctic to antarctic = 11000 miles

d₂ = displacement of tern from antarctic to arctic =   - 11000 miles

d = total displacement for the journey

total displacement for the journey is given as

d = d₁ + d₂

d = 11000 + (-11000)

d = 0 miles

t₁ = time of travel from arctic to antarctic = 3 months = 3 x 30 days = 90 days

t₂ = time of travel from antarctic to arctic = 3 months = 3 x 30 days = 90 days

t = total time of travel

total time of travel is given as

t = t₁ + t₂

t = 90 + 90

t = 180 days

average velocity is given as

average velocity = total displacement/ total time

v = d/t

v = 0/180

v = 0 miles/day