To demonstrate a better way
Answer:
natural disasters,emigration and scarcity of food
Explanation: natural disasters: this affect population where by organisms leave there area or habitat for another area due to unfavorable conditions eg. flood, bush fire, storms, earthquake etc. and can also lead to death.
Emigration:this is when organisms leave an area for another either in search of food, breeding purpose this reduses population where by organisms may never return.
scarcity of food:this occur when there is insufficiency or no food in an area which makes organisms leave their habitat for another in search of food and might even lead to death.
The correct answer would be D. Mollusca.
The question is basically describing a snail.
Arthropoda have segmented bodies.
Echinodermata(starfishes, sand dollars etc.) are radially symmetrical.
Also none of them have shells except phylum Mollusca :)
Answer:
Food/ diet
Explanation:
malnutrition is getting too little or too much of certain nutrition while overeating is taking too much of nutrition, both happens in food/diet
Answer:
La biogeografía es el estudio de la distribución de especies y ecosistemas en el espacio geográfico y a través del tiempo geológico.
