Although amphibious frogs live on land and in water, they must lay their eggs in water or the eggs will dry up, effectively killing the offspring inside. Frog eggs are covered with a glycoprotein, which helps keep the eggs moist. This glycoprotein has to keep in contact with a source of moisture, such as water.
True
Explanation:
The ocean conveyor belt explains the cyclic nature of global water round the globe.
It suggests that cold denser water circulates and moves downward whereas warm water rises.
- The great ocean conveyor belt shows that the world's ocean is constantly circulating and mixing.
- At high latitude where temperature is low, warm water from around the equator where the sun is over head loses heat to warm the atmosphere.
- As they lose heat, they become colder and denser.
- They then sink and begin to flow southward where they get heated and rise.
- This conveyor belt is driven by salinity and temperature differences.
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Overproduction
Most species produce more offspring than can survive.
Competition
Since living space and food are limited, organisms must compete for the necessities.
Variation
Differences between individuals in a population.
Adaptations
Any kind of inherited trait that improves an organism's chances of survival.
Natural selection
The environment selects organisms with optimal traits to be the parents of the next generation.
Speciation
Over many generations, favorable adaptations accumulate and may result in a new species.
The reptile produce few offsprings having no unique traits, and the vegetation as well changes quickly so that it can be protected from the reptile species.
Explanation:
Majority of the reptiles lay eggs or give birth to young ones such as squamates , this is done in two ways such as by keeping the egg inside the body of the mother or by developing offsprings without any formation of eggs. Climate change is having an adverse effect on the reptiles , a physiological as well as ecological change is occurring as a result reptiles as well as other species are in danger. Climate change is having an adverse effect on snakes , that is, there is fall in range size of snakes.
