Muscles can only pull; they cannot push.
Answer the following statement true (T) or false (F)
True
Muscles can only contract and pull on the bone they are attached to.
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Lignin is a complex polymer of methoxylated ________ compounds and is present in ________
A) silica / aquatic environments B) mineral / rocks C) oil / fossil fuels D) aromatic / vascular plant material
The primary consumers in natural communities
are a. herbivores. b. carnivores. c. scavengers. d. decomposers. e. all of these
__________ stop fluid from leaking across an
epithelium. Fill in the blank(s) with the appropriate word(s).
The ________ model of succession proposes that early successional species modify the environment so that it becomes more suitable for later successional species
Fill in the blank(s) with correct word