Answer:
A. 2 speciation events and 5 extinctions
B. 5 speciation events and 1 extinction
Explanation:
As we can see from the diagram, there were only 2 ,aim speciation events for lineage A. The extinction events were 5 for the A lineage. Hence, as the extinction event was more rapid than the speciation event so lineage A contains only one species.
On the other hand, the diagram shows that for lineage B there were 5 speciation events and just 1 extinction event. Hence, the number of species in lineage B were more at the time zero as just one extinction had occurred.
Ask the question I brainy.com
D) Contour plowing is used to reduce erosion and sediment pollution.
Explanation:
Contour plowing in farming helps to prevent pollution by reducing surface erosion of topsoil and preventing sediment pollution.
Contour plowing is a farming technique in which crops are planted along the slopes of hills or contoured areas.
- The rate at which rain water and precipitation moves along slope terrain is very fast.
- This causes the washing off of the the topsoil on hills to eroded very fast.
- Contour plowing breaks the slope and farming is done along movement on the contour.
- This prevents topsoil erosion.
- It also prevents sediment pollution in nearby streams and water bodies that are located around the valley at the base of the hill.
Learn more:
Soil erosion brainly.com/question/2473244
#learnwithBrainly
In clockwise hemisphere would you find this motion. As shown in picture the arrow is facing toward the south to north east direction.
<h3>
In which direction earth rotates?</h3>
Earth rotation direction is west to east, that appears counterclockwise when viewed from above the North Pole.
Any circle drawn around the earth divides it into two equal halves called hemispheres. There are four hemisphere northern, southern, western, eastern hemisphere on the earth.
For more information regarding hemisphere rotation, visit:
brainly.com/question/15853460
#SPJ1
