Answer:
Keratinization is seen in the epidermis. Cells in the stratum corneum are essentially just bags of keratin.
Fungi and bacteria are the key decomposers in many ecosystems; they use the chemical energy in dead matter and wastes to fuel their metabolic processes. Other decomposers are detritivores—detritus eaters or debris eaters. These are usually multicellular animals such as earthworms, crabs, slugs, or vultures.
Answer:
Coevolution.
Explanation:
Coevolution may be defined as the process of evolution of two species together. The coevolution was first coined by Peter H. Raven and Paul R. Ehrlich.
The co evolution effects the evolution of the species and reciprocally effect each other. For example: the insect and the flowering plant both evolve with each other and may sometime develop the mutual relationship each other.
Thus, the correct answer is option (b).
The inactive X is called also as Barr body. It stains much darker than the other chromosomes because of the fact that it is inactive. By being inactive it means that the chromatin of that chromosome is very compact because it is not used for gene expression. Being so compact, all the staining is concentrated creating a darker body.
An adult sponge reproduces by mitosis, or cell division.