BIOLOGY HIGH SCHOOL

The cephalothorax is a fusion ofa. the head and tail region
b. the abdomen and thorax region
c. the head and thorax region
d. none of these, it is not fused

Answers

Answer 1
Answer: The answer is c. the head and thorax region.

The word cephalothorax is derived from two Greek words - cephalon, meaning head, and thorax. So, it is a fusion of these two body parts, and it is characteristic for chelicerates (scorpions, spiders,...) and crustaceans (crabs, lobsters, shrimps,...) . Cephalothorax is unsegmented and rigid and it is easy to differ it from the abdomen.

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An attraction between molecules can be called a _______.
When researchers use a molecular clock what are they measuring?
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Determine whether each of the scenarios pertains to the anaerobic or aerobic breakdown of glucose.
To classify an organism a scientist finds in the field, which of these will the scientist first compare to other known organisms?A. Dietary habits B. Ecological niche C. Physical structure D. Reproductive method

A. True
b. False Plankton and nekton are found in the ocean. A shark is an example of nekton.

Answers

The answer is A. True.

Plankton includes a diverse group of organisms that live in the water but are not capable of active swimming against the water current. On the contrary, nekton includes a diverse group of organisms that live in the water but are  capable of active swimming without the help of the water current. A shark is capable of active swimming, therefore, it is the example of nekton.

Donald Johanson, Tom Gray, and others discovered a hominid that lived in East Africa__________ million years ago and nicknamed her Lucy, whose scientific name they gave as __________.(A) 35, Homo habilis
(B) 3.5, Homo africanus
(C) 5.5, Australopithecus africanus
(D) 3.0, Australopithecus afarensis
(E) 5.5, Australopithecus boisei

Answers

the answer is a 35 homo habilis
A is the answer! :) I hope it helps

Why is it difficult to reduce human population growth

Answers

the world population grows by millions everyday and its hard to keep those numbers down

Which structure is the site of nutrient and gas exchange between the mother and a growing fetus? A. placenta B. umbilical cord C. fallopian tube D. uterus

Answers

Answer:

A). Placenta

Explanation:

During pregnancy, the embryo formed as a result of zygote growth produced from fertilization is implanted in the UTERUS or WOMB of the female. The developing fetus is strictly dependent on the mother for all the substances it needs to survive. These substances reach the fetus via a structure present in the uterus. This structure is called PLACENTA.

Placenta is the connection between the mother and the developing fetus. It is an organ that helps the mother supply required nutrients and oxygen via the umbilical cord to the fetus. It also helps remove waste products from the fetus into the mother's blood. Hence, the PLACENTA is the site of nutrient and gas exchange (oxygen and CO2) between the mother and the fetus.
(A)Placenta is your answer......

Which level of organization includes all the other levels of organization?

Answers

The answer to this is the Ecosystem.
Hope I helped! :)

Fish, trees, and animals are important wildlife resources that we depend on for survival. Fish are a main source of food for many of the people in the world. Trees have been used to build and heat homes, make paper, and provide food for centuries. Humans hunt land animals such as deer, fox, antelope, and buffalo for food and other products. What can we do to protect wildlife resources so they will be around for future generations?

Answers

Answer:

harvest fast-growing trees, impose fishing limits, and impose laws to prevent poaching and illegal hunting

Explanation:

i got it right
We can limit fishing and hunting to certain seasons. This allows the population to increase and continue breeding, but we still get food. We can limit cutting down trees so that ecosystems can survive. Many species have lost homes due to deforestation. By cutting down only some trees in an area, we can still have wood to use, and we can save ecosystems.
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