Because the temperatures vary on high global temperatures and its economy.
Ask the question again intelligently, all of your grammar mistakes and typos make it hard to understand.
Answer:
4cm because the wavelength is the measure of a distance between two identical peaks or Crest
The answer to this question about the evolution of the gymnosperm plants would be C. They evolved after the seedless vascular plants.
Gymnosperms, or sometimes termed as seed plants, are classified as vascular plants and has been thriving for centuries on earth through producing seeds. They are multicotyledonous and are the opposite of flowering plants. Conifers would be the most abundant group of gymnosperms while the cycads come in second. Gingko would place last with just having one species under its name.