I am pretty sure it is CD4 cell
Answer:
The best example of hypothesis which leads to new experiment methods was done by Morgan where he used fruit flies.
size hence streams are little and rivers are bigger than streams because a stream connects between two or more rivers
mark brainliest please :)
Earth's crust is made of rock, and rock is made of natural substances called minerals. There are three main types of rock: sedimentary, igneous, and metamorphic rock. Each type is produced in different ways. The oldest rocks on Earth were formed about 3.8 billion years ago.
