Biology, 25.01.2021 15:10 savannahvargas512
Some homes have stairs that are too steep or narrow for moving large pieces of furniture. In such cases, furniture may be lift ed by pulleys and moved in through upper windows. What is the efficiency of a system that uses 280 N of force to lift a 100 kg bed 6 m to an upper window? Those working the system have to pull 24 m of rope to lift the bed.
Answers: 2
Biology, 21.06.2019 22:30
How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.
Answers: 2
Biology, 22.06.2019 11:30
In a population that is in hardy-weinberg equilibrium, there are two possible alleles for a certain gene, a and a. if the frequency of allele a is 0.4, what fraction of the population is heterozygous? a. 0.40 b. 0.60 c. 0.16 d. 0.48
Answers: 1
Biology, 22.06.2019 18:30
In which order does sexual reproduction take place in plants? a. pollination, germination, fertilization b. germination, fertilization, pollination c. pollination, fertilization, germination d. fertilization , pollination, germination
Answers: 1
Some homes have stairs that are too steep or narrow for moving large pieces of furniture. In such ca...
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