What two ions make up most of the salt in seawater with percents?

Astudent observes a star from two positions of earth in its orbit, in summer and winter, and measures the change in the position of the star. which of these can be best calculated by this method?

92 sathe best for the question 11. most animals and plants reproduce sexually. this means that dna is passed down to new organisms from two parental organisms. which of the following is a key advantage of sexual reproduction?

Based on the data in your tables, did the light-colored moths have a higher or lower survival rate after the industrial revolution?