13. what is the name and function of the main lymphatic tissue found in the intestines?

a. thymus gland: enables the conversion of immature lymphocytes into mature t cells
b. thymus gland: contains b cells that initiate the humoral immune response during infection
c. payer's patch: enables the conversion of immature lymphocytes into mature t cells
d. payer's patch: contains b cells that initiate the humoral immune response during infection

Can someone me with this and tell me what’s fracking and what does it have to do with carbon, carbon dioxide, or fossil fuels?

Coat color in cats is determined by genes at several different loci. at one locus on the x chromosome, one allele (x ) encodes black fur and another allele (xo) encodes orange fur. females can be black (x x ), orange (xoxo), or a mixture of orange and black called tortoiseshell (x xo). males are either black (x y) or orange (xoy). bill has a female tortoiseshell cat named patches. one night, patches escapes from bill\'s house, spends the night out, and mates with a stray male. patches later gives birth to the following kittens: one orange male, one black male, two tortoiseshell females, and one orange female. what are the genotypes of patches, the stray male, and the kittens?

What is the difference between an igneous, sedimentary and metamorphic rock