1.
Biological is used to describe processes and states that occur in the bodies and cells of living things.
The living organisms somehow concentrated the minerals by ~ processes...
This is a natural ~ response.
ADJ: usu ADJ n
~ly
Much of our behaviour is ~ly determined...
ADV: ADV with cl/group, ADV with v
2.
Biological is used to describe activities concerned with the study of living things.
...the university’s school of ~ sciences.
ADJ: ADJ n
3.
Biological weapons and ~ warfare involve the use of bacteria or other living organisms in order to attack human beings, animals, or plants.
Such a war could result in the use of chemical and ~ weapons.
ADJ: usu ADJ n
4.
Biological pest control is the use of bacteria or other living organisms in order to destroy other organisms which are harmful to plants or crops.
...Jim Litsinger, a consultant on ~ control of agricultural pests.
ADJ: ADJ n
5.
A child’s ~ parents are the man and woman who caused him or her to be born, rather than other adults who look after him or her.
...foster parents for young teenagers whose ~ parents have rejected them.
= natural
ADJ: ADJ n