Which of the following can reduce biodiversity within a natural environment? a. yucca moths pollinate and feed on yucca plants in the mojave desert. b. red-billed oxpeckers eat ticks off of impalas' coats in the grasslands of east africa. c. non-native american bullfrogs out-compete native amphibians in the tropical andes. d. giant kangaroo rats enrich the soil for plants with their piles of grass clippings in the california grasslands.

Which of the following is a homogenous mixture? o a. a toy box filled with toys o b. blood o c. trail mix o d. spaghetti and meatballs submit

Suppose that an electromagnetic wave which is linearly polarized along the x−axis is propagating in vacuum along the z−axis. the wave is incident on a conductor which is placed at z > 0 region of the space. the conductor has conductivity σ, magnetic permeability µ and electric permittivity ε. (a) find the characteristic time for the free charge density which dissipates at the conductor. (b) write the maxwell equations and derive the wave equation for a plane wave propagating in a conductor. (c) find the attenuation distance at which the incident amplitude reduces to e ^−1 of its initial value. (d) find the electric and magnetic fields inside the conductor. 8 (e) find the power loss per area of the incident electromagnetic wave at the surface of conductor.

The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?