Answer: Time= independent Grade= Dependent
Explanation: Time is independent and the grade is dependent on time.
If 100,000 kJ of energy is available to the producers, 1000 energy is available to the secondary consumers in this food pyramid.
<h3>What is 10 law of energy flow explain?</h3>
According to ten per cent law only 10 per cent of the energy entering a certain trophic level of organisms is known for transfer to the next higher trophic level.
Thus, 1000 energy is available to the secondary consumers in this food pyramid.
To learn more about energy transfer click here:
brainly.com/question/1249777
#SPJ1
<span> Cells.Use Resources for Energy. Grows and Develops. Responds to Stimulus or Environment.<span>Reproduce.</span></span>
Answer:
Jawless fish was present before vertebrates.
Explanation:
Jawless fish has some characteristics of vertebrates and also considered as the ancestor of vertebrates on earth which is similar in appearance with the hagfish. It was present about 500 to 600 million years ago. They consist of cranium but vertebral column is absent. but with the passage of time, evolution occurs and many animals which was the descendant of this jawless fish having vertebral column or backbone in their body.
