Question

The heart of an amphibian
a. has a fully divided atrium
b. pumps blood to the lungs through the left atrium

2) Contrast the ways in which saltwater and freshwater fishes maintain salt and water balance.

Answer 1

@amistre64

Answer 2

@texaschic101

Answer 3

@TheSmartOne

Answer 4

@abb0t

Answer 5

The first one is a 50:50 chance. Also, I am not good with animal biology. You might want to ask someone else like @Jhannybean ?

Answer 6

ok

Answer 7

@Zale101

Answer 8

What's your choice for part one? a or b.

Answer 9

im guessing b

Answer 10

The way a says it's FULLY divided, i think it means that the two division is completely the same. That is wrong, because an atrium is divided into two distinct chambers, not the same.

Answer 11

I'm assuming it's b as well

Answer 12

oh ok
i don't understand number 2 at all

Answer 13

Here's the link, https://www.scientificamerican.com/article/why-do-some-fish-normally/
hope it helps

Answer 14

for number two

Answer 15

Amphibians have a three chambered heart. The ventricles are not divided as they are in humans, crocodilians, and a few other species. This means that de-oxygenated blood and oxygenated blood are mixing. This is occurring, due to a hole in the heart, during gestation of humans.