Answer:
Compound microscopes have more than one lens to generate high magnification images of flat, thin specimens. There are three major structural parts of a microscope: Head, Base, and Arm. ... The light is then collected and formed an image by an objective lens. We see the magnified images through the eyepiece
Explanation:
1.) Population density.
2.)Growth rate.
3.)Birth rate.
4.)Death rate.
True, magma is molten material from the mantle that has reached earths surface, also known as lava
Answer:
2) Evolution is the result of mutations and recombination, only. 3) Organisms best adapted to a changed environment are more likely to reproduce and pass their genes to offspring. 4) Asexual reproduction increases the survival of species.
Explanation:
Answer:
Permeable membranes allow anything to pass through.
Impermeable membranes have a poor permeable rate or nothing can pass through.
Semipermeable membranes select or allow only certain substances to pass through.
Explanation:
Permeable Membranes:
- Window screen - can pass water and air through 100%
- Mesh - can pass water and air through 100%
Impermeable Membranes:
- Clay - permeability rate is extremely low, and water cannot pass through
- Ziplock bag - nothing can come in or out
Semipermeable Membranes:
- Plant and Animal cell membranes (lipid bilayer) - only certain substances can pass through, like soluble vitamins
- Cell Organelle Membranes - only certain substances can pass through the mitochondria, for example
