Answer:
coal because you can use it for fire a lot so you won't get cold and you can make torches to keep it bright.
Answer:
Although lipids have a "backbone," they are not true biological polymers as their backbone is a three carbon molecule, glycerol, with longer substituent "side chains." For this reason, only proteins, carbohydrates, and nucleic acids should be considered as biological macromolecules with polymeric backbones.
Explanation:
Answer:
I think it's (Letter A) A bird has brown feathers that help it blend with ground where it's nest is located.
I hope this helps
Explanation:
Answer:
C
Explanation:
Most animals can't see orange, and this makes the tiger almost invisible. This is also why hunters wear orange.
Answer:
Temperature is a gradation but day/night is all-or-nothing
Explanation:
Temperature change is progressing. I.e from Hot to cold, it moves gradually along a gradient. But Night and Day is a two edged variance. It's either day or night, also know as the All-or-nothing .