Answer:
Explanation:
The Earth's axis is titlted so this means that it is pointing to one side of the Sun as it orbits it over a year-long period.
Answer:
Robber crabs have more in common with humans than sponges.
Explanation:
Robber crabs have more in common with humans than sponges because sponges don't have tissues. Crabs and humans have specialised tissue.
Water boils at 212 degrees farenhiet
Answer:
complement is a system of plasma protiens that can be activated directly by pathogens
The two-layered sac surrounding the heart is the pericardium.
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