A deposit of sediment where a stream or river enters a lake or the ocean is called a(n) ____
a. alluvial fan
b. braided stream
c. dune
d. tidal flat
e. delta
e
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From which time period would you expect the most abundant and best preserved fossils?
a. Hadean b. Archean c. Paleozoic d. Mesozoic e. Cenozoic
Children learning the process of good home gardening decide to help as best they can. Every day they walk along rows of bean plants, carefully inspecting each plant for insect and removing any that they find
However, the bean plants do not grow well and few beans form. Their parents notice the beans, inspect the plants and soil, and tell the children that walking around the plants every day has hurt the plants by A) compacting the soil, decreasing aeration and infiltration. B) increasing soil aeration and killing soil microorganisms. C) reducing the nutrient minerals in the soil. D) converting the topsoil into clay.
Benthic organisms in the Great Lakes ________
A) live near the water's surface B) are harmed by the presence of zebra mussels C) include phytoplankton D) benefit from the presence of zebra mussels E) include zebra mussels
Which of these are present in an element's nucleus?
A. electrons and protons B. neutrons C. neutrons and protons D. electrons