Your heart is an organ made up of ?

cardiac muscle

blood tissue

nerve tissue

all of the above

Which of the following occurs after a natural or unnatural disturbance in an ecosystem

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen

How are the reproductive cycles of a fungus and a pteridophyte similar? a)both organisms form fruiting bodies that produce diploid seeds. b)both organisms produce haploid spores and exhibit diploid and haploid stages. c)both organisms reproduce sexually when two haploid hyphae fuse. d)both organisms exhibit a diploid stage and are only able to reproduce asexually.