physical defense
chemical defense
camouflage
social defense
Viruses is like *cough cough* Ebola *cough cough* And the characteristics is welllllll it spreads
Answer:
19-22 days after fertilization of egg by sperm
Explanation:
The heart is the first organ to be formed in a developing embryo. This is because it is a vital organ and responsible for the circulation of blood (with oxygen and nutrients) to the other developing tissues. It begins to be formed at around 18 days from fertilization and begins to function after day 21.
The answer is:Instinct is the inherent disposition of a living organism toward a particular behavior. Instincts are generally inherited patterns of responses or reactions to certain kinds of stimuli. Instinctive behavior can be demonstrated across much of the broad spectrum of animal life.
Answer:
A. ATP
Explanation:
The Cyclic electron flow in the chloroplast includes only PSI and does not produce NADPH and oxygen gas. The process produces the only ATP.
During cyclic electron flow, electrons are transferred from the P700 reaction center to the ferredoxin and back to the PSI via cytochrome b6f and plastocyanin.
Since the electrons are not passed to the NADP+, NADPH is not produced. The proton gradient generated during this electron transfer drives ATP synthesis.
