What excersices can replace weights when trying to gain muscle mass can I get the same amount of muscle mass with that excersices that I could’ve with weights?

Which type of nerve creates a 'mental map" of the relative positioning of the body at any given point in time?

Which of the following must be treated under the care of a physician and is mainly considered a medical condition? a. scoliosis b. lordosis c. kyphosis d. all of the above

Why do rna viruses appear to have higher rates of mutation? a) rna nucleotides are more unstable than dna nucleotides.b) replication of their genomes does not involve proofreading.c) rna viruses can incorporate a variety of nonstandard bases.d) rna viruses are more sensitive to mutagens.