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What event characterized the Paleozoic Era ?

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint

hello

answer: collecting information/data

reason: the student is going around and asking people questions to collect data

i hope this

i wish i could with all of them i can barley see the first one so here's the answer to the first one b