Which one of these is not an example intercellular communication? a) bacteria share information about nutrients b) ribosomes make proteins c) endocrine cells send hormones into blood d) hypothalamus signals pituitary gland

Fill in the blank with the correct sphere label. a: ⇒ geosphere b: ⇒ biosphere c: ⇒ hydrosphere

Can nonrenewable resources be used sustainably?

1. mendel observed that pea plants had traits, such as color, that were either “one or the other,” never something in between. discuss the correlation between mendel’s factors, what they might be, and why pea plant traits come in one form or another—e. g., gray or dark red—rather than blended.