Answer as soon as (biology) 60 scientists say that we should not look for the earliest ancestors of animals among modern-day protists. write a short paragraph that explains why.

This is what I could think if:

Tracing the roots and looking for the ancestors of protists will be hard because protists are an animal group that has extended really far, which makes things harder when looking for the roots of these organisms. Most of the corrent living organisms are protists, and there are may, manny different families, genus, species, etc. within this group. Tracing the origins and ancestors of the modern day protist would take years. And that is not the only case. Protists have lived on Earth for millions of years, which means that they haved changed and adapted a lot since the first protists appeared.

Hope it helped,

BioTeacher101

the answer will be a) proteins i believe

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.