Answer:
d
Explanation:
mixtures are made up of more than one components
D. The sand has a higher conductivity.
Your answer would be D friction.
Answer:
Molecules
Explanation:
Electromagnetic waves are not like sound waves because they do not need molecules to travel. This means that electromagnetic waves can travel through air, solid objects and even space.
-Alexis
Answer:
B
Explanation:
One of the main problems is the soil erosion reducing the fertitlity of the soil, thus reducing it's chances of the soil helping plant growth, thus reducing biodiversity. The other selections worsen the problem.
