Skeletal muscles are attached to bones to allow movement. Skeletal muscles have a striped appearance. Which of the following is true of skeletal muscles? *

a. Skeletal muscles are an example of cardiac muscle.
b. Skeletal muscles are an example of smooth muscle.
c. Skeletal muscles are an example of voluntary muscle.
d. Skeletal muscles are an example of involuntary muscle.

individual oxygen atoms are formed during photosynthesis.-c.

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.