Shells evolved from ribs. ... Turtles and other shelled creatures use shells like shields to protect themselves from predators, or animals that hunt them. Turtles probably needed a shield on their backs and stomachs because they faced predators in the ocean from both above and below.
I believe number 4 is the correct answer
Answer:
Mr. Van Daan is caught stealing bread in the Annex. This changes our understanding of the past food shortages in the Annex, as they may have been caused by Mr. Van Daan stealing food for himself, leaving the others without food.
Carolus Linnaeus believed that as animals became more complex, so did their emotions.
Answer: c. Carolus Linnaeus
Answer: price of a large van = $35000
price of a small van = $30000
Explanation:
Let the price of a large van = x
Let the price of a small van = y
Since A receives 5 large vans and 2 small vans for a total cost of $235,000. Location B receives 2 large vans and 3
small vans for a total cost of $160,000. This can be written as:
5x + 2y = 235000 ........ i
2x + 3y = 160000 ........ ii
Multiply equation i by 2
Multiply equation ii by 5
10x + 4y = 470000 ..... iii
10x + 15y = 800000 ..... iv
Subtract iii from iv
11y = 330,000
y = 330000/11.
y = 30,000
From equation I,
5x + 2y = 235000
5x + 2(30000) = 235000
5x + 60000 = 235000
5x = 235000 - 60000
5x = 175000
x = 175000 / 5
x = 35000
Therefore, price of a large van = 35000
price of a small van = 30000
