Answer:
D. Fossils of the Cambrian Period
Explanation:
The Cambrian Period (541–485.4 million years) is the period known for the explosion of life on Earth, when all the major phyla of multicellular organisms originated, and almost all the groups we find today, in a period of time geologically short.
The primitive faunas of this period had numerous morphological patterns, an immense variety of species, mostly soft-bodied animals, and new ecological strategies such as predation, burying themselves deep in the sediment and building complex, branched tunnels. They also featured some relatively large skeletal animals, such as trilobites, brachiopods, and
Islam, Christianity, Hinduism and animism
Answer:
(d) increase by 100%
Explanation:
= initial mass of earth = m
= final mass of earth = (0.5) m
= initial radius of earth = R
= final radius of earth = (0.5) R
= initial acceleration due to gravity of earth = g
= final acceleration due to gravity of earth
initial acceleration due to gravity of earth is given as
Eq-1
Final acceleration due to gravity of earth is given as
Eq-2
Dividing eq-1 by eq-2

inserting the values

= 2 g
So there is 100% increase
Based of the map, you can infer that it's D because if you look the rivers are running through multiple countries and act as a border for the countries of Germany, Austria, Hungary, etc.
hopefully this helps