A group of different tissues working together to perform a particular job

Why are primary sources important when studying historical events

What do most climatologists see as a major cause of rising global temperatures? a. earth's closer proximity to the sun due to its gravitational pull b. greenhouse gases produced by burning fossil fuels c. rising ocean levels caused by melting polar ice sheets d. water pollution cause by industrial waste

How are the processes of asexual reproduction and sexual reproduction different? check all that apply.