4.
according to the cell theory, cells come from

photosynthesis

spontaneous generation

cellular respiration

other living cells
5.
somatic stem cells are extracted from developed organs.

true

false

Hurry which of these is true about index fossils? a) are very scarcely found b) used as guides in relative dating c) found in the youngest layer of the rock d) used as reference points in absolute dating

Hybrid instruments that play sounds that are part sampled and part synthesized are known as:

How do the sperm cells get from the stigma to the ovules? a. they slide down the petals to the bottom of the flower. b. they travel through pollen tubes. c. they travel along filaments. d. insects carry the sperm cells from the stigma to the ovules.