Ozone molecules in the stratosphere shield the Earth from damaging UV radiation. Indicate whether the statement is true or false


True

Biology & Microbiology

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Macroevolution may have been caused by

a. changes in homeotic genes. b. small, cumulative genetic changes. c. exaptation. d. allopatric speciation. e. more than one of these.

Biology & Microbiology

Which of these adaptation(s) is (are) unique to

mammals? a. hair or fur b. four types of upper and lower teeth that match up c. sweat glands d. secretion of milk by females e. all of these

Biology & Microbiology

Suppose a bag made of a selectively permeable membrane was filled with a 5% solution of glucose and sealed. What would happen if the bag was placed in pure water or in a 10% glucose solution?

What will be an ideal response?

Biology & Microbiology

Geologists have evidence that over the past 1.5 billion years

A) Earth's landmasses have remained in the same shape and positions as they have in the current time. B) Earth's landmasses have joined into a single continent and split back apart again on three occasions. C) Earth's landmasses have changed positions extensively but have remained separate and in the same shapes. D) Earth's landmasses have changed shape and have been entirely submerged in water on three occasions.

Biology & Microbiology