<span>b. a cell takes in DNA from outside the cell.</span>
Explanation:
(1) Is referring to Newton's first law, an external force (gravitational force) is applied to frogs motion, thus causing it to deviate from a straight line
(2) is referring to Newton's third law of motion, the action force is done by the ball hitting the ground and the direction is downwards, the reaction force is done by the ground transferring that same force to the ball, acting upwards
(3) I think it's also the first law, the person on a train is showing, the force to keep it at rest, the sudden halt of the train causes a reaction force to act on the person, does making the person move
(4) I think it's both Newton's second law and third law motion.
I hope these helps
Answer:
Bottom line: The planets in our solar system orbit (revolve) around the sun, and the sun orbits (revolves) around the center of the Milky Way galaxy. We take about 225-250 million years to revolve once around the galaxy's center. This length of time is called a cosmic year.
Explanation:
The part of the endometrium that undergoes cyclical changes in response to sexual hormonal levels is the ______.
serosa
functional zone
muscular myometrium
basilar zone
none of the choices is correct
Answer:
functional zone
Explanation:
The endometrium of the uterus is a highly vascularized layer. The endometrium has the innermost of simple columnar epithelium, thick stroma, and the endometrial glands. Functionally, the endometrium has two layers. The functional layer or the functional zone is also called stratum functionalis. It serves to line the uterine cavity and sloughs off during menstruation. The basal layer is deeper and is called stratum basalis. It is permanent and forms a new functional zone after each menstruation.
