11 Alicia conducted an experiment to find out which insulating material holds in the most heat. She did multiple trials of
each test and recorded observations of each trial.
Why did Alicia do more than one trial?
O to improve the variability of her data
O to prevent other people from using the data incorrectly
to help in arriving at a conclusion even with inaccurate data
O to reduce the likelihood of errors in the experiment

Differences between compact bone and cartilage

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.