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Answers by Zenil

Answers by Zenil
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Gas exchange is more difficult for aquatic animals with gills than for terrestrial animals with lungs because _____. gills have less surface area than lungs water contains much less oxygen per unit volume
answered Sep 15, 2023
5 votes
63.0k views
Solve the proportion. 3/6 = 7/d
answered Jul 21, 2023
9 votes
12.5k views
1a)Which of the following amines is classified as a secondary amine? 1)N-methyl-2-butanamine 2)1-butanamine 3)2-butanamine 4)3-methyl-2-butanamine 1b) A polymer has the structure: -(CH2C(CH3)2CH2C(CH3)2CH2C(CH3)2)n-What
answered Jun 26, 2023
4 votes
13.4k views
The primary reason professional observatories are built on the highest mountaintops is to.
answered Jun 13, 2023
5 votes
110k views
A true-false test contains 11 questions. In how many different ways can this test be completed. (Assume we don't care about our scores.)Your answer is :
answered Jan 25, 2023
4 votes
222k views
Please help me with this geometry work, its very confusing! Picture provided! Please help ASAP
answered Sep 6, 2022
3 votes
121k views
What is true about elements that are in the same column group or family
answered Jul 31, 2022
5 votes
232k views
What is 5 to the power of 6 over 5 to the power of 2
answered Jul 21, 2022
6 votes
207k views
Of feathers,fat,and freezing how does the author convey the idea that chickadees eat large quantities of food to survive extremely cold temperatures
answered Jun 6, 2022
10 votes
226k views
Why do atoms of different elements vary in size?
answered Mar 25, 2022
3 votes
191k views
5x^2 + 19x + 12=0 how do i figure this out
answered Mar 21, 2022
3 votes
140k views
Please help, lots of points!!!
answered Feb 5, 2022
4 votes
125k views
Name 5 kids who helped the world
answered Jan 30, 2022
3 votes
86.1k views
I need help with number 6 please
answered Jan 16, 2022
3 votes
229k views
Slaves were brought from Africa to help grow which crop? ОА. Wheat O B. Trees Ос. Sugar OD. Corn
answered Dec 29, 2021
0 votes
126k views
What makes an iceberg dangerous? a. Decisions are made based on what you can see b. It is challenging to know the iceberg’s exact shape and size c. You can’t confront an iceberg without facing the facts
answered Dec 19, 2021
4 votes
21.3k views
The eighth grade class at Seven Bridges Middle School has 93 students. Each student takes a current events class, a foreign language class, or both a current events class and a foreign language class.
answered Sep 19, 2021
2 votes
107k views
8. Which of the following events was a foundation of self government? A. the signing of the Mayflower Compact B. establishing the House of Burgess C. the Iriquois confederacy D. All of the above
answered Sep 16, 2021
2 votes
151k views
The Spanish Armada was defeated by the British. Why did Philip II of Spain send his fleet to English waters to begin with? a. to gain control of trading rights in the English Channel c. to expand the Spanish
answered Aug 24, 2021
2 votes
193k views
If you have an account that initially had 100 dollars and after a year earned interest. The total account balance is now 115 dollars. How much is the increase in percentage?
answered Aug 21, 2021
2 votes
232k views
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