Answer: owls invade rodents that maintain ecosystem.
Explanation:
Farms have huge importance in term of food production and maintaining ecosystem (having all level of tropic levels). But, crops and vegetations are normally destructed by rodents. Thus, rodents are invaded by owls which helped to control crop damage and increase yield production that eventually maintain ecosystem of farms.
Answer:
Gametes that will be produced are:
YST, YSt, YsT, Yst, yST, ySt, ysT, yst
Explanation:
From YySsTt, it is obvious that as there 3 type of genes.
The number of gametes = 
= 8
5 genes = 
= 32 genotypes
10 genes = 
= 1024 genotypes
20 genes = 
= 1048576 genotypes
Answer:
a.aquatic plants
Explanation:
The energy stored in organic matters, which can be used as fuel for various purposes. This the same energy obtained from the sun that is passed on to each tropic level by the 10% law. This is known as biomass energy.
Biomass is highest at the first trophic level in any food chain. In the aquatic food chain also the highest biomass at the first trophic level which aquatic plants.
Hence option a is correct.
B. Subgroups
<span>When constructing a dichotomous key, the first step is to look at the group of objects or organisms and separate them into two groups based on a single distinguishing characteristic. Then continue to separate each of the groups until each object has its own separate set of characteristics.</span>
