Top answers

How do vaccines cause immunisation to disease?

Vaccines contain an inactive form of a pathogen, or dead pathogen, and are injected into the body to give immunity to that pathogen. The inactive pathogen acts as an antigen, stimulating an immune response, ...
RY
Answered by Rachael Y. • Biology tutor
4411 Views

What are the 3 main variables within a scientific experiment?

• The independent variable is what you change throughout the experiment. Some examples of this may be temperature, pH, light levels or time. • The dependent variable is what is being measured. This is expect...
RY
Answered by Rachael Y. • Chemistry tutor
22640 Views

What is apocapation?

There is a certain group of adjectives in Spanish which need to be shortened- only in front of MASCULINE SINGULAR NOUNS. This is called apocapation. The adjectives are: -Uno (un hermano) -Primero (el primer ...
AD
Answered by Annie D. • Spanish tutor
6407 Views

Explain how a profit can be earned in the short run but not the long run in a perfectly competitive market.

This is a fairly common a) question on Economics HL paper one. It is a 10 mark question, so a maximum of 20 minutes should be spent on it in order to leave time for question b). It concerns the workings of t...
WG
Answered by William G. • Economics tutor
9611 Views

When is the subjunctive used in Spanish?

After certain phrases, which can be remembered by WEIRDO: -Wishes (Quiero que/ espero que) -Emotions (Me alegro que/ Me da pena que) -Impersonal expressions (Es importante que/ Es mal que) -Recommendations (...
AD
Answered by Annie D. • Spanish tutor
3091 Views