Which of the following statements is true?
as latitude north and south of the equator decreases, average temperature decreases.
the temperature of the sun's surface does not affect the earth.
cool air rises and warm air sinks.
warm air rises and cool air sinks.
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what does warm air from the equator do?
rise and move toward the poles
sink and move toward the poles
remain in the same location and does not move



what type of season does myrtle beach, sc most likely have?
very cold winters
very hot summers
mild winters
no winters
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deep ocean currents are caused by
the earth's curved surface
temperature differences
wind
the water cycle


hurricanes
usually form over land
generally intensify over land
gain strength from ocean heat
usually form near the poles
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how does the sun affect the water cycle?
sunspots cause surface water to condense.
cooling water vapor causes it to evaporate and form clouds.
heating surface water causes it to evaporate and enter the air as a gas.
the sun does not affect the water cycle.


which of the following statements is true?
water heats up and cools down more quickly than land.
in the southern hemisphere, most currents flow in clockwise loops.
wind is caused by the uneven heating of the earth.
the more sunspots on the sun's surface, the cooler the earth's climate.

As given under.

Explanation:

1.  Warm air rises and cool air sinks.

2. rise and move toward the poles.

3. mild winters

4. temperature differences.

5. gain strength from ocean heat.

6. Heating surface water causes it to evaporate and enter the air as a gas.

7. Wind is caused by the uneven heating of the earth.

ability to bond woth oxygen

fertilization, pictured in figure 24.23a is the process in which gametes (an egg and sperm) fuse to form a zygote. the egg and sperm each contain one set of chromosomes. to ensure that the offspring has only one complete diploid set of chromosomes, only one sperm must fuse with one egg. in mammals, the egg is protected by a layer of extracellular matrix consisting mainly of glycoproteins called the zona pellucida. when a sperm binds to the zona pellucida, a series of biochemical events, called the acrosomal reactions, take place. in placental mammals, the acrosome contains digestive enzymes that initiate the degradation of the glycoprotein matrix protecting the egg and allowing the sperm plasma membrane to fuse with the egg plasma membrane, as illustrated in figure 24.23b. the fusion of these two membranes creates an opening through which the sperm nucleus is transferred into the ovum. the nuclear membranes of the egg and sperm break down and the two haploid genomes condense to form a diploid genome.

explanation: