1. combination of DNA may survive environment changes. is this an advantage or disadvantage of internal fertilization ?
is this an disadvantage of external fertilization ?
is this an advantage or disadvantage of asexual and sexual reproduction ?
is this an disadvantage of asexual reproduction ?
pls answer this. thank you very much

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

i hope this

the food storage products of chrysophytes are oils or the polysaccharide laminarin.   formerly classified as plants, the chrysophytes contain the photosynthetic pigments chlorophyll a and c all but the yellow-green algae also contain the carotenoid pigment fucoxanthin.