Answer:
Explanation:
Scientists at the Mauna Loa observatory in Hawaii say that CO2 levels in the atmosphere now stand at 387 parts per million (ppm), up almost 40% since the industrial revolution and the highest for at least the last 650,000 years.
1. courtship rituals 2. attract a mate 3. internal fertalisation occurs inside the feamales body whereas external fertalisation occurs outside the feamales body 4. <span>Gametes may get washed away 5. the devoloping zygote is protected</span>
Most of the brain's excitatory ionotropic synapses use the neurotransmitter glutamate.
The best correct answer is C.
Hopes it help
Answer:
Protists help break down dead material and help produce oxygen
Explanation:
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