Which of these describes a nebula?
A) A collection of hot gases that sometimes produces light from nuclear reactions.
B) A collection of dust and gases that is found near stars.
C) A collection of hot gases that results from stars that have exploded.
D) A collection of dust and gases that forms stars or results from dying stars.
Answers: 3
Biology, 21.06.2019 15:00
6. in the dna double helix, how are the two strands of dna held together? a. chemical bonds between base pairs hold the two strands of dna together. b. hydrogen bonds between the base pairs hold the two strands of dna together. c. hydrogen bonds between sugar groups and phosphate groups hold the two strands of dna together. d. chemical bonds between sugar groups and phosphate groups hold the two strands of dna together.
Answers: 1
Biology, 22.06.2019 09:00
The spermists believed that: the male made the only hereditary contribution to the offspring the male and female traits were blended in the offspring the female made the only hereditary contribution to the offspring the male and the female made equal contributions to the next generation
Answers: 1
Biology, 22.06.2019 09:30
Parthenogenesis is a type of reproduction that does not require a mate. itโs rarely seen in birds and higher vertebrates. parthenogenesis involves the formation of a zygote. but this zygote is formed without fertilization. in parthenogenesis, in the absence of a male gamete, the ovum develops directly in the zygote.
Answers: 1
Biology, 22.06.2019 11:00
What happens during the experiment stage of the scientific method
Answers: 1
Which of these describes a nebula?
A) A collection of hot gases that sometimes produces light from...
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