Answer: <u>organism, population, community, ecosystem</u>
Explanation: Ecology is the part of the biology in which the study of organism and environment is done along with the relation established between them. This study also includes human,animals and physical surroundings as well. It displays the adaptation and interaction happening in the ecological environment.
The stage/steps of order is followed as organism then population of human, community of them and ecosystem stage respectively .
Answer: a. Wolf
Explanation:
A phylogenetic tree is a diagrammatic representation in which the premitive living species are compared with the modern organisms on the basis of morphological as well as genetic similarities and differences. Hence, they are separated into distinct groups.
All the given organisms in the options (wolf, domestic cat, lion, and leopard) belong to the vertebrata phyllum. Among the options given all the organisms, except wolf, the other organisms are morphologically close to one other. Thus for constructing a phylogenetic tree for these organisms, wolfs will be an out-group. The other organisms will be the descendent belonging to the same group.
Answer: The atmosphere of the early Earth consists mainly of carbon dioxide and nitrogen, with little or no oxygen. In this case, the ancient prokaryotes are anaerobic, which evolved in the absence of oxygen. Eventually, when photosynthetic bacteria became common, they released oxygen and changed the Earth's atmosphere.
Explanation: i took a test with this on it, i hope my answer helps
