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Which of the following parts of the human body is most complex?
decomposers
an increase in the number of photosynthetic organisms
cell wall
central nervous system
They evolved from a common ancestor.
chromosomes of every cell.
a fish that lived recently and a fish that lived a long time ago
What sex is the organism?
Most of the bacteria in a forest ecosystem are best classified as which of the following types of organisms?
decomposers
an increase in the number of photosynthetic organisms
cell wall
central nervous system
They evolved from a common ancestor.
chromosomes of every cell.
a fish that lived recently and a fish that lived a long time ago
What sex is the organism?
Which of the following questions may best be answered by studying an organism’s chromosomes?
decomposers
an increase in the number of photosynthetic organisms
cell wall
central nervous system
They evolved from a common ancestor.
chromosomes of every cell.
a fish that lived recently and a fish that lived a long time ago
What sex is the organism?
Two dogs of the same breed that have different coat colors. The instructions that determine coat color are stored in the
decomposers
an increase in the number of photosynthetic organisms
cell wall
central nervous system
They evolved from a common ancestor.
chromosomes of every cell.
a fish that lived recently and a fish that lived a long time ago
What sex is the organism?
Which of the following parts of a plant cell has a function that is most similar to the function of an animal skeleton?
decomposers
an increase in the number of photosynthetic organisms
cell wall
central nervous system
They evolved from a common ancestor.
chromosomes of every cell.
a fish that lived recently and a fish that lived a long time ago
What sex is the organism?
Some types of bacteria can only live where oxygen is not present. These bacteria were well adapted to life on Earth over 2 billion years ago. Which of the following changes caused many of these bacteria to become extinct?
decomposers
an increase in the number of photosynthetic organisms
cell wall
central nervous system
They evolved from a common ancestor.
chromosomes of every cell.
a fish that lived recently and a fish that lived a long time ago
What sex is the organism?
The bones of a whale flipper are similar to the bones of a bat wing, what does this similarity in bone structure suggest about the whale and the bat?
decomposers
an increase in the number of photosynthetic organisms
cell wall
central nervous system
They evolved from a common ancestor.
chromosomes of every cell.
a fish that lived recently and a fish that lived a long time ago
What sex is the organism?
Comparing the skeletons of which of the following fish would best show the evolution of a fish species?
decomposers
an increase in the number of photosynthetic organisms
cell wall
central nervous system
They evolved from a common ancestor.
chromosomes of every cell.
a fish that lived recently and a fish that lived a long time ago
What sex is the organism?
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