Answer:
16
Explanation:
Cells multiply so if at 22 there are 2
at 44 there will be 4
at 66 there will be 8
at 88 there will be 16
D. <span>controlled
is the right answer because a</span><span>n </span>experiment<span> in which an observer tests a hypothesis by looking for changes carried by alterations to a variable.</span>
Tom Regan's position about the use of animals in research and agriculture is that animals should never be used for medical research or commercial <span>agriculture.
Tom Regan was a famous American philosopher who was mostly interested in animal rights. He believed that animals shouldn't be put through any testing or experiments because we don't have their consent to do that. He believed it was unethical to do that.
</span>
The correct answer is C. Tissue
Explanation:
In the diagram, x is between organ and cell level. This implies this level of organization is smaller than an organ but no as small as one cell. In this context, the most suitable term to add to this level is a tissue because these are structures composed of specialized cells, which shows this level encloses cells. Also, a group of tissues forms an organ; this implies the organ is the level that follows the tissue. Examples of this include muscle tissue composed of muscle cells and that is part of organs including the heart.
Answer:
A
Explanation:
During prophase I, the homologous chromosomes condense and become visible as the x shape we know, pair up to form a tetrad, and exchange genetic material by crossing over.
