Why an object must be centered in the field view in low power before going to high power

What is a coast of using technology to transport water? a. cities can be built in otherwise uninhabitable areas. b. crops can be irrigated and grown in new areas. c. floods can be averted in flood-prone areas. d. freshwater supplies can be depleted in an area.

Which experiment would most likely contain experimental bias

What is the statement plant growth is affected by the color light