Answer:
The phylum of mollusks includes more than 50000 known species, found in freshwater ... Echinoderms have a water vascular system originally used to collect and ... by expanding or contracting their rows of tube feet in a particular sequence.
Explanation:
true
Answer:
C. Sunlight shines only three months out of the yea
Explanation:
Sunlight is a limited resource so the plants would compete for the resource
A. convective currents within the Earth.
Scientists believed convective currents within the earth is what caused lithospheric plate movements.
Do you take earth science?