Answer:
mass (m) is 5 kg
acceleration due to gravity (g) is 9.8 or 10 m/s2
weight (w)is ?
w= mg
w=5×10
=50 N
hence weight is 50 N
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:
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Uhh where’s the question?
Answer:
There will be less animal life in lake Raymond in the next year.
Explanation:
In the year with heavy rain, this has caused the depth of Raymond lake to be increased. This will bring an increase in the growth and survival of more water plants and animal species.
In the second year where there is a decrease in the water level, the animals and water plants will face problems. The worst hit are those plants and animals species that lives at a much deeper path of the lake with the least sunlight or any external factors that are now going to be more exposed due to low water level..
Answer: Lydia's answer is correct.
Explanation:
The solution used by Lydia is:
4/5 × 10 = 4 × 1/5 × 10
= 4 × 10/5
= 4 × 2
= 8
The above solution by Lydia is correct.
Given the question, 4/5 × 10, this will be:
= 4/5 × 10/1
Let's multiply the numerator first, this will be: = 4 × 10 = 40
The denominator will be: = 5 × 1 = 5
Therefore, 4/5 × 10/1 = 40/5
Now when we divide 40 by 5, we will get 8. Therefore Lydia is correct.
