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irina1246 [14]
3 years ago
13

THE MENSTERUAL CYCLE Fill in the missing blanks

Biology
1 answer:
IrinaVladis [17]3 years ago
3 0
1) 28 2) ovaries 3) fallopian tube 4) ovaries 5 & 6) ovary 7) ovulation 8 & 9) uterus 10) fallopian tube 11) sperm cell 12) uterus 13) fertilized 14) blood 15) uterine 16) vagina 17) 28 18) menstruation
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Advanced forms of life existed on earth at least 3.55 billion years ago. In rocks of that age, fossilized imprints have been found of bacteria that look uncannily like cyanobacteria, the most highly evolved photosynthetic organisms present in the world today. Carbon deposits enriched in the lighter carbon-12 isotope over the heavier carbon-13 isotope-a sign of biological carbon assimilation-attest to an even older age. On the other hand, it is believed that our young planet, still in the throes of volcanic eruptions and battered by falling comets and asteroids, remained inhospitable to life for about half a billion years after its birth, together with the rest of the solar system, some 4.55 billion years ago. This leaves a window of perhaps 200-300 million years for the appearance of life on earth.

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In ________, the interaction between two species harms both of them.
iris [78.8K]
Competition is the interaction in which both are harmed....
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FASSST!!!physical science!!!!!
jeka94

Answer

#21

2 for NaF

1 For Br2

2 For NaBr

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#22

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