Biology, 27.06.2019 15:30 emilyanneK2540
Carol and maria spread some dirt out in a flat pan. their classmate ben blew over the dirt with a straw. some of the dirt moved and formed ruts and bumps. they propped up one end of the pan with a board so the dirt looked like a big hill. then the girls sprayed the dirt with some water in a spray bottle. more dirt moved as the water ran down the hill. both the wind and the water modeled what process? a) decomposition b) erosion c) gravity d) weathering
Answers: 2
Biology, 21.06.2019 23:30
The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2
Answers: 2
Biology, 22.06.2019 01:30
Which best explains how a heat pump can heat a room? cold air from the house is moved through pipes, where it absorbs thermal energy. warm air from outside is pushed into the house to replace the cold air. combustion warms the air when chemical energy is transferred to thermal energy. fuel is used to move a piston, which pushes warm air into the house.
Answers: 1
Biology, 22.06.2019 10:30
16. which of the following accurately describes a step within transcription? a. dna polymerase uses one strand of rna as a template to put together nucleotides. b. the dna strand is used as a template for which a complementary rna strand can be produced. c. the rna strand forms a template by which dna can be built. d. the rna strand is produced within the cytoplasm.
Answers: 3
Carol and maria spread some dirt out in a flat pan. their classmate ben blew over the dirt with a st...
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