Which of the following is a multicellular mass that nourishes the embryo until it becomes a self-supporting seedling?
A) the endosperm
B) a seed coat
C) a fruit
D) a cotyledon
A
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Which event can be followed by primary succession?
a. a landslide b. a storm c. a fire d. a volcanic eruption e. logging
What distinguishes the leatherback sea turtle from other sea turtles pictured in this figure?
1.lacks shell
2.streamlined body
3.paddle-shaped back limbs
4.large flipper-like front limbs
A population age structure diagram showing roughly equal numbers in each age group, such as in the United States population pyramid, depicts a
A. stable population.
B. population facing extinction.
C. declining population.
D. growing population.
E. very small population size.
Discuss the difference between covalent, ionic, and hydrogen bonds.
What will be an ideal response?