<span>Schleiden and Theodor Schwann (1810-1882)were the first to recognize that all plants and animals are composed of cells. [ In 1839, they defined their "cell theory" in which they also stated that nuclei and cell membranes are common to all cells and recognized the presence of unicellular (single-celled) and multicellular (many-celled) organisms. ( ]</span>
Answer:
False
Explanation:
A divergent boundary happens when two tectonic plates move away from each other. When two plates collide, it is known as a convergent boundary.
The external ear structure is called the Pinna.
The Pinna helps to channel sound waves into the ear.
Many animals have the ability to move their pinna towards the direction of sound.
I have attached an image of a dog's ear to show you the external structure called the Pinna.
I hope this helps! I'm happy to answer any other questions you might have :)
[Image sourced from: https://www.msdvetmanual.com/dog-owners/ear-disorders-of-dogs/ear-structure-and-function-in-dogs]
Answer:
phenotypes
a. genotypes
A person's genotype refers to their genetic blueprint and it is fixed at conception. While A person's phenotype refers to the physical expression of their genetic code which can be altered by biological and environmental factors