From the cosmic background radiation, what can scientist infer that the universe was like after the big bang a. very small b. hot c. the same average temperature as it is today d. cooler than it is today

Select the correct answer. in the image, if the washcloth represents consumed food, which organ of the digestive system correctly represents the action performed by the hands? hands squeezing water from a washcloth a. esophagus b. large intestine c. liver d. mouth

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?

The most effective way to provide children with safety messages is to