Isotopes of the same element differ in their ___?

Answers

Answer 1
Answer: contain equal numbers of protons but different numbers of neutrons in their nuclei

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Which of these characteristics is common only at the embryonic stage of fish and humans, and is suggestive of a common ancestor between the two? A) presence of lungs B) presence of a tail C) presence of gill slits Eliminate D) presence of a vertebral column

Answers

The answer is; C

Most often some ancestral characters are preserved in an organism's development hence can be used to study evolutionary relationships. One of these features is the gill slits in embryos. These have been used to postulate that all land organisms, that exhibit gill slits in their embryonic development, emanated from a common fish ancestor. In humans, these gill slits later develop in the pharyngeal.

What is the difference between a bony fish and a cartilaginous fish?

Answers

Bony fish belong to Class Osteichthyes, while cartilaginous fish belong to Class Chondrichthyes. Bony fish have a bony skeleton, while cartilaginous fish have one composed mostly of cartilage. Bony fish have body coverings of scales, while cartilaginous fish are covered with dendritical projections (think shark skin).
Bony fish are found in fresh and salt water; cartilaginous fish are found only in salt water. Bony fish have gills covered by an operculum; cartilaginous fish have gill slits. Bony have no eyelids; the cartilaginous fish do. Bony fish have an air-filled swim bladder; cartilaginous fish have an oil-filled liver to keep them bouyant. Hope this helps! Whew!

Which color of light does chlorophyll b absorb more than any other color

Answers

Ans.

Chlorophyll b is a green colored, accessory photosynthetic pigment that helps in the process of photosynthesis by collecting enegry. It traps solar energy and transfers it to the chlorophyll a.

Chlorophyll b absorbs red and blue light of electromagnetic spectrum, which ranges from 650-680 and 450-480 nano meter. The light primarily absorbed by the chlorophyll b is blue light.

Thus, the correct answer is 'blue light.'

I'm going to say chlorophyll b absorbs  RED (650nm) and VIOLET BLUE (450nm)

Hopefully this helped and good luck

Select all that apply. Plants are used for ____

Answers


Food, medicine, soil holders, decoration, and building(straw is an example) are some that I can think of
Nutrition, medicine, decoration, cleaning the air.

CAN SOMBODY PLEASE HELP ME WITH MY HW THANL YOU 60 PONITS!!!!!!!!!!!!!!!!!!!1. Reducing energy and pesticide use
2. Promoting an understanding of and appreciation for the environment
3. Eliminating invasive species
4. Reducing pollution in lakes, rivers, and bays
5. Promoting corporate responsibility

A.
Environmental education centers
B.
Native plant organizations
C.
Pro-conservation political groups
D.
Local organic co-ops
E.
Local water alliances

Answers

the answers are
1._ D. Local organic co-ops 
2._A. Environmental education centers 
3._B. Native plant organizations
4._E. Local water alliances
5._C. Pro-conservation political groups

How do hydrophobic signalling molecules travel around the body?

Answers

Answer:

Hydrophobic molecules don't like water,just like the membrane.Since the membrane and these signaling molecules are made of the same thing,liquid,they can easily mix together.

Explanation:

Hydrophobic signalling molecules move right through the cell membrane to the target inside the cell.