1) true; 2) false; 3) true
Answer: Dark energy and dark matter describe proposed solutions to as yet unresolved gravitational phenomena. So far as we know, the two are distinct. Dark matter originates from our efforts to explain the observed mismatch between the gravitational mass and the luminous mass of galaxies and clusters of galaxies.
Reproductive process of amoeba
Genes,all organisms are identified by their genomes in the big picture
It is the variety of life on earth.it is variety within and between all species of plants,animals, and microorganism and ecosystem in which they interect
