Specific excretory organs are absent in unicellular organisms belonging to the<u> phylum Porifera.</u>
The organisms of the phylum Porifera are classified under the kingdom Animalia and they lack specific organs in their bodies.
The word "Porifera" refers to pore-bearing organisms.
These animals have loosely organized cells and are found in freshwater marine ecosystems.
On their body, a large number of pores - Ostia - are present which perform various functions such as excretion.
However, respiratory gases and waste materials are exchanged through a diffusion process.
Moreover, in them, reproduction takes place through fragmentation and budding.
If you need to learn more about excretory organs click here:
brainly.com/question/28302813
#SPJ4
Answer:
6.96 miles or 7 miles
Explanation:
The fisrt thing I like to do here is convert the 35 mph into miles per minute, because it takes 12 minutes to get there. So you divide 35 by 60 to get mpm. It is traveling .58 miles per minute. In order to see how far it is, you multiply .58 by 12, because it takes 12 minutes to get there. If you set up and equation, it would be .58= miles/12min. That would give you 6.96 miles or 7 miles.
Answer:
x-rays can pass through many things but its much harder for them to pass through lead or some metals. thats why if you're getting a full body x-ray or a head x-ray they ask you to take any jewlery out or belts.
Explanation: