Answer: because water is much more dense than air, tidal energy is more powerful than wind energy. Unlike wind, tides are predictable and stable. Where tidal generators are used, they produce a steady, reliable stream of electricity
Explanation:
This is associative learning.
The reactions of George and Ken are based on when they are startled. George will learn to associate his sister's crying with him being startled because it happens every time his sister cries.
Whereas Ken will not know when his sister will cry or when he will be startled by the crying so this has no affect on Ken.
Hence, crying will affect George but not Ken.
Answer:
B - Dinosaur Skin
Explanation:
Unless the skin is mummified, like that of a Pinacosaurus, the chromatin in the bones will be completely deteriorated.
The correct answer is that they help to retain moisture in terrestrial habitats.
Arthropods exoskeletons and mollusk shells both help to retain moisture in the terrestrial habitats.
Arthropod is an invertebrate animal which have an exoskeleton, paired jointed appendages and segmented body. They are characterized by their jointed limbs which are cuticle and are made of chitin.
They are the most species-rich members of all ecological guilds in most environments.
Molluscs are termed as large phylum which is of invertebrate animals. They are the largest marine phylum and they live in terrestrial habitat and freshwater.
No salt does not contain carbon because it is an inorganic compound