Biology, 21.07.2019 10:30 livigrace9004
Astudent creates a model of a closed ecosystem by filling a glass tank half full with water, then adding 10 snails and two small aquatic plants. the next day, all the snails are dead. which action would have been most likely to keep the snails alive? a. adding more plants b. adding nitrogen c. adding more water d. adding another animal species
Answers: 2
Biology, 21.06.2019 16:30
Which best explains why viruses do not have special structures or enzymes that allow them to make their own food? viruses can use energy in living cells that they infect. viruses can replicate inside a host that they infect. viruses can cause contagious illnesses in host cells. viruses integrate their rna or dna into infected cells.
Answers: 1
Biology, 22.06.2019 08:30
What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons
Answers: 1
Biology, 22.06.2019 11:30
Which is the best example of plant tissue? the answer is d (just took the test)
Answers: 1
Astudent creates a model of a closed ecosystem by filling a glass tank half full with water, then ad...
Mathematics, 21.04.2021 21:10
Mathematics, 21.04.2021 21:10
Mathematics, 21.04.2021 21:10
Mathematics, 21.04.2021 21:10
Mathematics, 21.04.2021 21:10