Plants, protists, fungi, and animals are all known to obtain energy through aerobic respiration. which of the following must be present in all these organisms for this to be true?
a) mitochondria
b) hemoglobin
c) chlorophyll
d) ribosomes
e) cellular walls

The health, management and conservation of biodiversity, is a challenge facing ecosystems worldwide. the major factors that affect the health and function of the great barrier reef are climate change and pollution. which question investigates the effects of a biotic factor on the reef ecosystem?

What is a group of organisms that are closely related and share similar characteristics

What does the positioning of transcription factors determine?