What direction will a comet's tail point when going around the sun?

Which sentence best describes the relationship between chlorophyll and the chloroplast? a.) chlorophyll is a chemical found in a chloroplast. b.) chloroplast is a chemical found in a chlorophyll. c.) both chlorophyll and chloroplasts are found in animals. d.) both chlorophyll and chloroplasts make carbon dioxide.

What are the pros and cons of quadrat sampling?

Which of the following cell structures is significantly different between gram- positive and gram-negative bacteria?