This statement is true. The fertile central valley region is indeed located in California. It is a huge, flat valley that covers up the geographical center of the state of California. In this valley is where California's most productive agriculture can be found.
Answer:
Outside cell:Signals coming from other cells
Inside cell: Cell stress, weak external signals
Explanation:
Apoptosis can be intrinsic or extrinsic. Where it is intrinsic, signal for Apoptosis comes from within the cell(in this case cell stress or weak external signal) apoptosis; death of cell occurs. Extrinsic signal occurs where the cell gets signals from other cells and apoptosis takes place.
B: false; Trichomes are highly specialized epidermal cells and serve as an excellent material for studying cell fate, differentiation, and specialized metabolism through single-cell omics.
Answer:
The scientists believe that they arose in Africa and spread to the rest of the world.
Explanation:
A is not correct because the Homo sapiens is not the earliest ancestor of moern humans, but it is the latest.
B is not correct because such evidence is lacking, and even though the Homo sapiens mixed with other hominids in Eurasia and sub-Saharan Africa, they were not of the same species.
C is correct because the evidence suggests for now that the Homo sapiens arose in Africa, and through several migration waves spread out on the other continents.
D is not correct because the Homo sapiens has not been replaced by any other species, as they are the species nowadays known as humans.
Hydrogen, helium, and nuclear fusion
