Decaying tree would be considered a biotic as it is now dead, however it will form an ecosystem of bacteria, fungi and other saprotrophs.
Answer:
A "big idea" of physical science is simply the overarching concepts that are part of that genre.
Explanation:
For physical science, the big ideas include
forces/motion
space/time
energy
nature of matter
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The components of blood are plasma, white blood cells, red blood cells and platelets.
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Answer:
The correct answer is d) circular folds.
Explanation:
Circular folds slow food going through the small intestine so the villi and microvilli can help the food to be processed and digested properly. Also, the presence of these circular folds increases the surface where the nutrients are being absorbed.