Answer:
one has a pp and one has a coochie
Answer: B) ferns
Algae, liverworts and moss are examples of plants with no
real stems, leaves or roots and are also known as nonvascular plants. Plants
with true roots are known as vascular plants. Vascular plants have real roots, stems and leaves and contain vascular tissues.
Answer:
symbiotic
Explanation:
symbiotic relationships benefit both organisms
The correct answer is A because G and C work together, and T and A work together, except A turns into U when transferring to mRNA.
Answer:
difference:
1. The generation mechanism is different, the mechanical wave is generated by mechanical vibration; the electromagnetic wave generation mechanism is also different, there is the periodic movement of electrons (radio waves); the outer electrons with atoms are generated after being excited (infrared, visible, ultraviolet) The inner electrons with atoms are generated after excitation (roentgen rays); the nuclei with atoms are generated after excitation (gamma rays).
2. The propagation mechanism is different: the mechanical interaction between the particles and the alternating induction of the electromagnetic field.
3. Mechanical waves have both transverse waves and longitudinal waves; electromagnetic waves are material waves and belong to transverse waves.
4. The influence of the medium on the propagation speed is different
Explanation:
https://qiaodahai.com/similarities-and-differences-between-mechanical-waves-and-electromagnetic-waves.html
