Answer:
Living organisms often contain trace amounts of several elements, but the most abundant ones are oxygen, carbon, hydrogen, nitrogen, calcium and phosphorus.
Explanation:
Answer:
Air pollution occurs when harmful or excessive quantities of
substances are introduced into Earth's atmosphere. Sources of air
pollution include gases (such as ammonia, carbon monoxide, sulfur
dioxide , nitrous oxides , methane and chlorofluorocarbons),
particulates (both organic and inorganic), and biological molecules .
Explanation:
Answer:
The correct answer is DNA or RNA. Viral chromosomes exist in a variety of conformations and can be made up of <u>DNA or RNA</u>
Explanation:
The hereditary material of viruses is organized into chromosomes of different types. From the genetic point of view, viruses can be classified into DNA or RNA viruses, double helix or single helix, and circular or linear, that is, viral chromosomes are linear or circular molecules of DNA or RNA. Viruses can be classified according to the type of organism they parasitize in: Bacteriophages or phages, animal viruses and plant-type viruses. Viral chromosomes are also subject to the recombination process, this happens when an individual cell is infected simultaneously by two mutant strains of a virus.
False. Only the shape of the organism is visible in rock, no other material (flesh,...) remains
OMG DOES ANYONE NOT HAVE UESTION FROM LIKE TWO WEEKS AGO
