If the diagonal entries in a diagonal stress matrix are equal, what does the stress ellipsoid look like, and what do we call this state of stress?
What will be an ideal response?
Answer: The stress ellipsoid will be a sphere, and the state of stress is isotropic.
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Most of the wheat, rice, and corn raised in the world has resulted from genetic engineering of one sort or another, either by crossing certain varieties or deliberately transferring genes using transgenic techniques
These methods select for plants that produce their own defenses against pests with chemicals or physical barriers. Helping to feed the world, this represents an example of A) cultural control. B) natural enemies control. C) genetic control. D) natural chemical control.
Streams that exhibit flow only during wet periods are called ________
A) intermittent streams B) braided streams C) ephemeral streams D) meandering streams
Calcium carbonate is:
a. CaSO4. b. NaCl. c. SiO2. d. CaCO3. e. Fe2CO3
High temperatures and pressure convert
A. igneous rock into sedimentary rock. B. sedimentary rock into metamorphic rock. C. igneous rock into minerals. D. metamorphic rock into sedimentary rock. E. metamorphic rock into igneous.