Question

use the diagram to match each organism to its trophic level.
what is the source of all (most) energy, in ecosystems, on earth? (excluding ecosystems like brine pools, hydrothermal vents, and cold seeps that are located below the epipelagic photic zone in oceans.)
the earths core
the sun
tides generated by the gravitational pull of the moon by earth
use this link to open the food chain creator.
complete all 4 levels.
put a snip of the last level below.
what do the arrows in the food chain represent?
what gets eaten first in the food chain.
what organism is the primary consumer.
the directions in which energy moves through the ecosystem.
how heat is lost by only consumers through cellular respiration.

Explanation:

Question 9

Step1: Recall energy source in ecosystems

In most ecosystems (excluding specific deep - ocean ones), producers (like plants) use sunlight for photosynthesis. This is the base of the energy flow.

Step2: Analyze options

• The Earth's core energy is not the main source for most surface ecosystems.
• Tides (from the moon's gravitational pull) are not the primary energy input for most ecosystems.
• The sun provides light energy that producers convert into chemical energy.

Question 11

Step1: Understand food chain arrows

In a food chain, arrows show the direction of energy transfer. For example, if \(A\to B\), energy from \(A\) (e.g., prey) is transferred to \(B\) (e.g., predator).

Step2: Analyze options

• "What gets eaten first" is not what arrows represent. Arrows are about energy flow, not the order of eating in a simplistic "first" sense.
• "What organism is the primary consumer" is a role - based identification, not what arrows show.
• "How heat is lost... through cellular respiration" is not depicted by food - chain arrows. The arrows are about energy movement between trophic levels, not heat loss details.

Answer:

Question 9: The sun
Question 11: The directions in which energy moves through the ecosystem