Without external and internal stimuli, your body would not be able to maintain homeostasis. Homeostasisis a property of systems that regulates their internal environment (blood levels, temperature, nutrient levels, etc.) and tends to maintain a stable, constant condition despite changing external conditions.
I’d say the best answer is a and c
<span>Reptiles and birds excrete waste as an insoluble white solid that is called uric acid. This means that these wastes are made of very little amount of water. This helps them to maintain internal homeostasis in hot climates since the presence of water allows them to cool easily.</span>
The 4 things that both cells have is a plasma membrane, ribosomes, cytoplasm, and DNA!
the 2 basic types of cells are eukaryotic and prokaryotic.
(i had to go digging through my old science notes for this haha)