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KiRa [710]
3 years ago
15

Help (Brainliest!) (19 POINTS!!!)

Biology
1 answer:
pochemuha3 years ago
6 0

Answer:

The fourth one

Explanation:

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The earliest ancestors of about half of all extant animal phyla can be traced back to the _____ explosion. see concept 32.2 (pag
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The answer is 'Cambrian' explosion. This took place approximately 541 million years ago. 'Explosion' refers to the evolution of a large range of new major animal phyla. Scientists know this by the large number of diverse fossils from this period. Prior to this period, organisms were single-celled, but over the Cambrian Explosion, lasting about 80 million years, life forms diversified rapidly to resemble the life forms existing today.
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How does the procedure for using the microscope differ under high power as opposed to lower power
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3 0
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Marci eats 240 gm of carbohydrate, 220 gm from fat, and 132 gm from protein each day. what is marci's daily caloric intake?
luda_lava [24]

The answer is 3468 kcals. Protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.

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Hope this helps! :)

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