PLS HELP WILL GIVE BRAINLIEST 1. How many secondary consumers are in this food web?

2: which organism(s) has the least amount of energy available to them?

Why do we perceive objects as retaining their brightness under different lighting levels?

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes

Which of the following happened during the precambrian era? the first prokaryotic cells the first eukaryotic cells development of photosynthesis all of the above