For the first question is that crabgrass because in the process of secondary succession a forest fire burns down a forest then grasses grow back, then annual flowers bloom and eventually trees begin to grow so crabgrass is the initial stages of secondary succession.
Answer:
C. altering blood volume
Explanation:
Systemic blood pressure has a number of controls, both nervous and hormonal in nature. Nerve control is said to be short term and is basically done by the sympathetic and parasympathetic autonomic nervous system which, as a balance, seeks to balance systemic blood pressure to values considered stable.
This type of control works through chemoreceptors, reflex arcs associated with vasomotor fibers, and reflex arcs involving baroreceptors. The goal of short-term pressure control is to maintain balance.
Aquatic organisms greatly depend on the abiotic actors of an aquatic environment. Waves moving through the aquatic environment also influence the organisms living there. Depending upon the tidal zones, the organisms varies. Many aquatic organisms grow well in the intertidal zone can live in dry environment for a longer period of time. These organisms are also well adapted to withstand the damages that might be caused by the repeatedly pounding wave actions. Such organisms have tough exoskeleton (strong shell) to protect them from wave damage.
Some coastal plants are firmly attached to the rocks o that these are not torn away by the wave action. These plants have small, tough feather-like leaves.
The statement '<span>Hormones are chemical secreted and regulate by the endocrine system.' is indeed TRUE. The endocrine system is responsible for secreting bodily juices that would excite or inhibit the sympathetic and/or parasympathetic systems in the body.</span>
Plasma even though considered to be among the 4 fundamental phases of matter has signif different properties from the other three phases (solid, liquid and gas).
Unlike the other three, plasma doesn't naturally exist on the Earth under normal surface conditions, and can only be made under artificial conditions from neutral gases.
Plasma in simple words is a collection of ionized particles. An ionized gas is plasma. It's a collection of electrons with positively charged gaseous ions.
It is associated with the interior of the sun and other stars.
One another marked difference is that unlike the common solid-liquid-gas phase transitions, phase transitions with plasma do not take only by varying pressure and temperature.
Plasma is generated by ionizing a gas using a strong electromagnetic field and/or heating the gas to fantastically high temperatures (so high that it could melt any ordinary container; for this reason magnetic fields are used to confine hot plasma). Hope this helped :)
