Answer:
2
Explanation:
The two DNA strands intertwine around each other to form a double helix.
Answer:
Changes in allele frequencies over time can indicate that genetic drift is occurring or that new mutations have been introduced into the population.
the earths crust because it is the first layer of the earth
Answer:
The correct answer will be option-D.
Explanation:
Biologists have identified eight characteristic feature of a living organism which distinguishes the living organism from non-living organism.
The features are that organisms should contain: cells, heredity material, metabolism, reproduction, sensitivity, homeostasis, growth and development.
In the given question, when the scientist hypothesized that structure is living organism then it should show all the options provided as all of these features are shared by the living organism.
Thus, option-D is the correct answer.
Tetanus
Tetanus is an acute bacterial
infection caused by the Clostridium tetani bacterium. It is
characterized by muscle spasms. The bacteria enter the body through a deep cut
or wound. The early symptoms of this infection include diarrhea, fever, and
headache. Other symptoms include sweating and rapid heartbeat.
