Insects have a distinct set of characteristics which all must have if they are insects. They must have three pairs of legs (even though sometimes they may appear different as larvae, such as caterpillars), a set of mouth parts, and a head, thorax, and abdomen.
Answer:
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Explanation:
True because the xylem transports water from the roots to the rest of the plant's body above ground and can only move up, whereas the phloem transports organic compounds both up and down the plant.
Answer:
the amount of fossil fuels that are available will eventually decline
Answer: prokaryotes (single celled micro-organisms/microbes)
Explanation: The first living things on Earth, single-celled micro-organisms or microbes lacking a cell nucleus or cell membrane known as prokaryotes, seem to have first appeared on Earth almost four billion years ago, just a few hundred million years after the formation of the Earth itself.