PTE

A teacher who provides individual or small-group guidance in a subject.

to gather measurements, responses, observations, or other information for a study

study that deliberately varies a condition to examine its effects

determine the amount or value of a study characteristic using a specified procedure

planned procedure used to conduct a research task

to watch or notice a subject carefully in order to gather information

person taking part in a research study

to write down, capture, or store information so it can be examined later

systematic work carried out to develop knowledge or answer a question

an outcome or piece of information produced by a study, test, or analysis

subset selected from a population for study

a book, article, document, person, or other origin from which information is obtained

systematic collection of information from people using questions

large farm animals, including cows and bulls, kept for meat, milk, or work

a small structural and functional unit from which living organisms are formed

to seek resources that other organisms also need and that are limited

to come out of an egg after developing inside it

a group of large animals, such as cattle, that live or are kept together

the series of stages through which an organism develops and reproduces, continuing the same sequence in the next generation

an animal of the class whose females produce milk for their young and whose members have hair at some life stage

to become, or cause fruit or a crop to become, fully developed and ready to eat or harvest

to remain alive despite danger or difficult conditions

the fish or other aquatic animals caught in a fishing activity, considered as an amount or group

to remove waste, litter, or contamination from a place

the usual pattern of weather in a place, including its averages and variation over many years

a plant grown in substantial amounts for food, materials, or sale

connected with producing milk or with foods made from milk

food given to farm animals rather than food they find for themselves

to cover land or buildings with water, or to become covered with water where it is normally dry