The _____________________ is a saclike pouch that forms around the embryo during the embryonic stage
Fill in the blank(s) with correct word
placenta
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In various parts of the world, soil phosphorus is associated with which of the following environmental problems?
A) soil degradation because of depletion of soil phosphorus B) eutrophication of lakes because of a build-up of soil P in the watersheds C) toxic levels of phosphate in groundwater supplies D) both A and B E) all of the above
Concrete formwork must be properly prepared so it will not _____
a. blow out b. leak c. settle d. implode
Which of the following is a true statement related to commercial load estimating?
a. It is never best to deal with core and exterior zones individually; always treat as a single space. b. Commercial buildings often experience their maximum need for heat in the middle of the day. c. The people load is handled the same as a residence (one person per room, plus one). d. The load may vary significantly as the day progresses, partly due to solar movement.
Describe the metric welding symbol practices such as those used in the British Standard.
What will be an ideal response?