He uses a rusty old saw. His pap is careful not to leave any knives around while he is gone, but Huck finds the saw between the rafter and clapboards of the roof.
Answer:
The external skeleton of arthropods is a highly efficient system for small animals. The exoskeleton provides a large surface area for the attachment of muscles and, in addition to functioning in support and movement, also provides protection from the external environment.
Explanation:
Good Night fam
There are several "downsides" to extensive use of synthesized nitrogen-containing fertilizers; it contributes to algal blooms and dead zones in bodies of water, nitrogen is usually considered as a highly effective and economical fertilizer. However, the repeated use of the chemical can cause an imbalance in the pH of the soil, eventually leaving it unusable for growth of any kind.
The answer is letter B.
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There are 2 embryonic and adult tissues found
in jellyfishes, hydras, and sea anemones. This is caused by the formation of a
germ layer—a group of cells in the embryo that interact with each other while
forming all organs and tissues. Germ layers develop through the process of
gastrulation in the early embryonic life. The three organisms mentioned have
two primary germ layers which gives them a radial symmetric structure
classifying them as Dipoblastic organisms.</span>
