Answer:
B. All of these are drivers
Explanation:
The populations of lot of amphibians, with rare exceptions, are constantly on the decline around the world. The main reason behind this is the human activity, as it has caused lot of changes, pollution, and dangers for the amphibian populations, which has led lot of amphibians to be on the verge of extinction.
The pollution, especially of the waters, has been a major factor for the decline of the amphibian population. Lot of very toxic chemicals have made the water unsuitable for living and poisonous, which systematically killed off the amphibian populations.
The habitat loss, as with any other group of animals, has left the amphibians without places to live. They have been left without their shelters, food sources, mating grounds, and they have started to die out.
The invasive species, especially the predatory ones, have also had big negative impact. The amphibians didn't had any defense mechanism against the introduced predators, so they were easy prey and their numbers rapidly went down.
Answer:
water it yield is 244290.45 ft
Explanation:
given data
specific storage SS = 2.4 × 
ft
thickness b = 300 ft
water declined ΔH = 4.8 ft
radius r = 1,500 ft
to find out
How much water would it yield
solution
we know that
volume of water is
Vw = S × Area × ΔH ..............1
here S = specific storage × thickness
S = 2.4 × × 300
S = 7.2 × 
and
area = πr² = π 1,500² = 7068589.471 ft²
so
volume of water is
Vw = 7.2 × × 7068589.471 × 4.8
Vw = 244290.45
so water it yield is 244290.45 ft
Indentured servants. The headrights system allowed planters to be given 50 acres of land for every person they payed for to come over.
<span>The study of how traits are inherited though the interaction of alleles is defined as genetics and it began in the 1850's. Gregor Mendel was the first scientist to study genetics. </span>
A specific location or point on a map.
