If I'm not mistaken, it leaves through the osculum which is a cavity located on the upper part of a sponge.
Sponges feed through a process called filtration, which means that they filter the water in search of nutrients. And after they collect everything they need from the water, they need to let it out somehow; through the osculum.
Hope it helped,
BioTeacher101
 
        
             
        
        
        
Answer:
C) Interaction increases the survival and reproductive rates of mutualistic species.
Explanation:
A) Mutualism offer more biodiversity to a community.
     Biodiversity is the different species living in one environment. Since mutualism is only involving two species, it wouldn't increase the biodiversity of one ecosystem, making it incorrect.
 
B) Individuals partaking in a mutualistic relationship relationship are more resistant to parasites.
     Mutualism is only benefiting two species, not their immunity to diseases and parasites. These two have no correlation with each other, making it incorrect.
D) Mutualistic interaction lessens competition in communities where it is present.
     Since mutualism is only benefiting two species, they have no correlation since the relationship doesn't affect the different species in the environment.
E) Mutualistic relationships allow organisms to synthesize and use energy more efficiently.
     Although there could be some relationships involving energy transfer between the species, that would sound more like commensalism or even paratsitism if you think about it. However, it is very uncommon and usually energy has no relationship with species relationships, making it incorrect.
Hope this helps! My deepest apologies if I got in incorrect!
 
        
                    
             
        
        
        
Answer:
All of the answer options are correct.
Explanation:
Chargaff contributed in understanding the structure and composition of DNA with his discoveries. He discovered that purine and pyrimidine bases are in equal amounts in a DNA molecule. He also discovered that amount of Adenine base (A) is equal to amount of Thymine base (T). It means that A pairs with T. Since A is a purine and T is a pyrimidine it also implies that purine base pairs with a pyrimidine base. This conclusion can also be arrived by taking in consideration the other base pair which is G (purine) and C (pyrimidine).
 
        
             
        
        
        
Answer:
b. <em>Homo neanderthalensis</em>
Explanation:
<em>Homo neanderthalensis </em>are extinct species of the Homo genus which lived in Eurasia until 40000 years ago. They initially lived in Europe and then migrated to Central and Southwest Asia. Compared to modern humans, they had shorter legs and bigger bodies. 
They have been known to construct huts out of mammoth bones. Archaelogists discovered a Neanderthal hut structure made of mammoth bone which is considered to be 44000 years old. This structure was 26 feet wide and mostly used for domestic purposes. Previously <em>Homo neanderthalensis </em>were considered primitive creatures who lived in natural caves but after this discovery it has been accepted that they were also advanced. 
 
        
             
        
        
        
That statement is false.
Biology study everything about living organism. As living organisms keep evolving, the things that we studied at biology will always changing and will never be static
hope this helps