<span>This would be a positive reinforcer. These are things like rewards and bonuses that will cause the subject to want to continue the rewarded behavior. The reinforcer does not need to be financial or even tangible. Positive comments and approval can be reinforcers that strengthen associated behaviors.</span>
Answer:
No organisms
Explanation:
This is because the kind of symbiotic relationship between plants root and microbes is mutualism. In this relationship both organism s benefit and non is harmed. The microbes make nutrients available for the root, it increase root permeability and also root metabolism while the roots provide home for the microbes and Al's derives food.
<span>The cell's growth would speed up significantly, leading to shorter periods of time between cell division.</span>
Answer:
The phylum of mollusks includes more than 50000 known species, found in freshwater ... Echinoderms have a water vascular system originally used to collect and ... by expanding or contracting their rows of tube feet in a particular sequence.
Explanation:
true
It is useful for an ecologist to identify the keystone species in an ecosystem because the keystone species is important to maintaining the stability of an ecosystem, and any changes in the keystone species population shows that there is changes in ecosystem health.