Answer:
<u>In the scientific method, theories offer explanations for facts.</u>
Explanation:
Scientific theory is based on complex observation, inference and experimentation techniques. Usually, the resulting reports are checked and peer-reviewed thoroughly before being accepted as explanations for facts evidence.
Thus, theories are rigorously tested, and verifiable explanations for facts which are based on observations.
During Pangea, Madagascar and India were one landmass. The species of frogs were homogenous across the
landmass. However, after continental
drift that began approximately 88 years ago,
allopatric speciation occurred to form different species on the two continents.
The dusky salamanders on the two continents that could once reproduce viable offspring 88 years
ago, cannot reproduce viably today because
they have diverged into two different species now.
It belongs to the Organ System
A trophic level is each step in a food chain that demonstrates the transfer of energy.
A trophic level is any feeding level in a food chain through which energy in the form of food is transferred in an ecosystem. A food chain contains five main trophic levels which are; (i) primary producers (autotrophs; plants and algae), (ii) primary consumers (herbivores), (iii) Secondary consumers (carnivores and omnivores), (iv) Tertiary consumers (carnivores and omnivores) and (v) Apex predators.
