Answer:
a. Comparative molecular studies trace our earliest genetic material to Africa
Explanation:
With the development of the genetics we have been able to come to new findings or confirm some suspicions when it comes to the origin of the humans. The genetic analyses of the human DNA and the other hominids that have died out, as well as out closest ''cousins'' in the animal kingdom, have shown that the earliest human ancestors have evolved in Africa. Over time, as the conditions allowed it, the hominids started to migrate out of Africa and gradually started to settle all around the planet.
Answer:
To burrow through the earth, a worm will flex its circular and longitudinal muscles to make itself long, then will extend the setae on its anterior, or front end to anchor itself in the earth. It will then contract its muscles to make its body short and bring the posterior, or back end, closer to the front.
Answer: It should be <u>C</u>.
Explanation:
For separate ecosystems to be classified as the same type of biome, they must —
x have deciduous forests
.
x be located along the equator
.
√ have similar organisms and climates
.
x be at least one hundred square meters in area.
A heart cell taken from a rat and placed in Flask A with a nutrient-rich culture medium produced heart cells after 24 hours.
A kidney cell taken from the same rate placed in Flask B with a similar nutrient-rich culture medium produced kidney cells after 24 hours.
The best explanation is:
INFORMATION DICTATING CELL TYPE IS PASSED FROM PARENT CELL TO OFFSPRING DURING MITOSIS.
