Answer:
true
Explanation:
an excintion event is a widespread and rapid decrease in thr biodiversity on earth.Such an event is identified by a sharp change in the diversity and abundance in multicellular organisms
Answer:
Maritime Polar air masses are cool, moist, unstable thus found over Arctic basin and greenland ice caps.
Explanation:
- Air mass is the volume of air defined by temperature and water vapor. Covering hundred and thousands of miles. Cooler are being found over the arctic.
- They move southwards along the Rockies into the plains then eastwards. These air masses collect warm and mist winds, originating in north Atlantic. The center of the air mass has high pressure and surrounded by lower air pressure at higher latitudes.
- Antarctica and arctic circle are dominated by such air masses
Answer:
Correct answer is:
B. Immigration to a new country
C. Economic advances or setbacks
Explanation:
Option A is not correct as the deep-seated religious practices are not allowing big changes in the society, as it usually remains closed.
B is correct as immigrants are often bringing their customs, beliefs and therefore are changing cultural patterns.
C is also correct as economical changes are important factor when it comes to the changes in the cultural patterns, as are allowing or disallowing them.
D is not as lack of technology is slowing down the societies.
Explanation:
An igneous rock with a mixed texture of coarse crystals (phenocrysts) surrounded by fine crystals (groundmass) is termed <em><u>porphyritic</u></em>
