The echinoderm with long spines
belongs to the class Echinoidea which includes sea urchins, heart urchins, cake
urchins and sand dollars. This spine serves as their protective mechanism from
predators. The spines are joined to the skeleton and muscles surround it. The muscles
enable them to swivel its spines from predators.
Answer:
renewable A carbon diooxide B any living thing C clay D water
non renewable all i know is geosphere and its fossil fuels
Explanation:
Answer:
I don't remember much, but I'll try my best.
Explanation:
Over time, sediments rocks pile up to form horizontal layers of sedimentary rocks. The bottom layer of rock forms first, which means it's the oldest. This would mean that while you can't be sure when each layer of sediments formed, each layer is younger than the one below it.
Answer:
b) summer
Explanation:
The meteorological seasons in the Southern Hemisphere are also opposite to those in the Northern Hemisphere: spring starts September 1 and ends November 30; summer starts December 1 and ends February 28 (February 29 in a Leap Year); fall (autumn) starts March 1 and ends May 31
Answer:
1. adenine
2. guanine
3. sugar
4. phosphate
5.. thymine
6 phosphate
7sugar
8. cytosine
9phosphate
10. nucleotide base pair
Explanation: use AT-AT's from star wars to remember the pairing or that C and G look similar