Answer:
The fossil record
Fossil remains have been found in rocks of all ages. Fossils of the simplest organisms are found in the oldest rocks, and fossils of more complex organisms in the newest rocks. This supports Darwin's theory of evolution, which states that simple life forms gradually evolved into more complex ones.
Evidence for early forms of life comes from fossils. By studying fossils, scientists can learn how much (or how little) organisms have changed as life developed on Earth.
There are gaps in the fossil record because many early forms of life were soft-bodied, which means that they have left few traces behind. What traces there were may have been destroyed by geological activity. This is why scientists cannot be certain about how life began.
Fossils provide a snap shot of the past and allow us to study how much or how little organisms have changed as life developed on Earth.
Answer:
C.
Explanation:
yes, astrology doesn't offer conclusive proof of its claims. astrologers predict the future with the location of planets and stars but they don't have a concrete theory that the location of a particular planet has an impact on human life. they believe in something called universal energy.
But I believe in my god.
Right receptor protein on the surface of the target cell or in cell plasma is required. There are three major types of receptors in cell:
1. Channel receptors- <span>neurotransmitters.</span>
2. Receptor tyrosine kinases-protein expression
3. G protein coupled receptors-<span>detect </span>substances<span> outside the </span>cell
Answer:
here
Explanation:
animal cells and plant cells share a common component of a nucleus cytoplasmic microchondria in a cell membrane plant cells have three extra components of vacuole chloroplasts and a cell wall
The most common form of cell division is called mitosis. It is used for growth and repair. During mitosis, a cell makes an exact copy of itself and splits into two new cells.
Mitosis is closely controlled by the genes inside every cell. Sometimes this control can go wrong. If that happens in just a single cell, it can replicate itself to make new cells that are also out of control. These are cancer cells.
